Subject:-Computer Graphics
Objective type questions Unit-III 2-D, 3-D Transformations and Projections
If we multiply any matrix with___matrix then we get the original matrix A___.
A. Scaling matrix
B. Translation matrix
C. Identity matrix
D. Opposite matrix
ANSWER: C
A Pixel is represented dy a tuple Xw,Yw,w in______.
A. Normalised Device Coordinates
B. Homogeneous coordinates system
C. 3D coordinate system
D. None of these
ANSWER: B
A _______ transformation alters the size of an object.
A. Scaling
B. Rotation
C. Translation
D. Shear
ANSWER: A
If the angle Q is positive then the rotation direction will be _________.
A. Clockwise
B. Anticlockwise
C. Parallel
D. Perpendicular
ANSWER: B
Reflection of a point about x-axis ,followed by a conter-clockwise rotation of 90 ̊ is equivalent to reflection about the
line ______.
A. X=-Y
B. Y=-X
C. X=Y
D. X+Y=1
ANSWER: CThe shape of the object gets by _________transformation.
A. Scaling
B. Rotation
C. Translation
D. Shear
ANSWER: D
A_______is a transformation that produces a mirror image of an object.
A. Scaling
B. Translation
C. Reflection
D. Both B & C
ANSWER: C
If we multiply any matrix A with identity matrix then we get the________matrix.
A. Identity matrix
B. Translation matrix
C. Scaling matrix
D. Original matrix
ANSWER: D
In homogeneous co-ordinate system a pixel is represented as ____________.
A. X,Y
B. X,Y,Z
C. X,Y,W
D. Xw,Yw,w
ANSWER: D
Two consecutive transformation t1 and t2 are _________.
A. Additive
B. Substractive
C. Multiplicative
D. None of these
ANSWER: A
Reflection about the line Y=X is equivalent to ________,followed by a anticlockwise rotation 90 ̊.
A. Reflection about y-axis
B. Reflection about x-axisC. Reflection about origin
D. None of these
ANSWER: B
Two consecutive scaling transformation t1 and t2 are __________.
A. Additive
B. Substractive
C. Multiplicative
D. None of these
ANSWER: C
After scaling a triangle having coordinates A(0,0),B(5,0),C(5,5)by 2 units in X and 3 units in Y direction the new
coordinates will be___________.
A. A(0,0),B(10,0),C(10,15)
B. A(0,0),B(10,15),C(10,0)
C. A(0,0),B(0,10),C(15,10)
D. A(2,3),B(10,0),C(10,15)
ANSWER: A
After performing Y-shear transformation we got A(2,5),B(4,11),C(2,7).If the constant value is 2 then original
coordinates will be___________.
A. A(2,5),B(4,11),C(2,7)
B. A(2,1),B(4,3),C(2,3)
C. A(4,1),B(10,3),C(4,3)
D. A(5,11),B(3,4),C(3,2)
ANSWER: B
After rotating a triangle having A(0,0),B(6,0),C(3,3) by 90 ̊about origin in anticlockwise direction,thenresultin
triangle will be_____.
A. A(0,0),B(3,-3),C(0,6)
B. A(0,0),B(-3,3),C(0,6)
C. A(0,0),B(0,-6),C(3,-3)
D. A(0,0),B(0,6),C(-3,3)
ANSWER: D
The point (x,y) becomes (y,x) in____________transformation.
A. Reflection about origin y-axis
B. Reflection about x-axis
C. Reflection at line Y=XD. Reflection about y-axis
ANSWER: C
Which of the following transformation is not used in rotation about arbitrary point in 2D?
A. Scaling
B. Rotation
C. Translation
D. None of these
ANSWER: A
After performing X-shear on triangle having A(2,1),B(4,3)C(2,3) with the constant value as 2,the resultant triangle
will be______.
A. A(2,5),B(4,1),C(2,7)
B. A(10,3),B(4,5),C(4,1)
C. A(4,1),B(10,3),C(4,3)
D. A(5,2),B(4,11),C(7,2)
ANSWER: C
If the resultant object is given along with the set of transformations applied on it, then to find the original object we
have to use___________.
A. Affine transformation
B. Reverse transformation
C. Normal transformation
D. Inverse transformation
ANSWER: D
Two consecutive rotation transformation are always__________.
A. Additive
B. Subtractive
C. Multiplicative
D. None of these
ANSWER: A
Two consecutive rotation transformation are always commutative____________.
A. TRUE
B. FALSE
C. Not always
D. None of these
ANSWER: AA point (x,y) becomes (-x,y) in__________transformation.
A. Reflection at X axis
B. Reflection at Y axis
C. Reflection at origin
D. Reflection about line Y=X
ANSWER: B
In Y-shear transformation point (x,y) becomes_______.
A. x+yb,xa+y
B. x+yb,y
C. x,xa+y
D. None of these
ANSWER: C
Reflection about X-axis followed by reflection about Y-axis is equivalent to_______.
A. Reflection about line Y= X
B. Reflection about origin
C. Reflection about line Y=-X
D. Reflection about Y-axis
ANSWER: B
Two consecutive scaling transformation are always commutative___________.
A. TRUE
B. FALSE
C. Not always
D. None of these
ANSWER: A
If a circle is scaled in only one direction then it will become___________.
A. Parabola
B. Hyperbola
C. Ellipse
D. Circle
ANSWER: C
The transformation that changes the co-ordinate positions of an object along a circular path is called_______.
A. Translation
B. ScalingC. Rotation
D. Reflection
ANSWER: C
The result of two successive 2D rotations R(Q1) and R(Q2) is___________.
A. R(Q1+Q2)
B. R(Q1.Q2)
C. R(Q1-Q2)
D. R(Q1/Q2)
ANSWER: A
If we take mirror reflection of a points(x,y) along x-axis then the point becomes_________.
A. (x,-y)
B. (-x,-y)
C. (-x,y)
D. (y,x)
ANSWER: A
If we take mirror reflection of a points(x,y) along the line Y=X then the point becomes________.
A. (x,-y)
B. (-y,-x)
C. (-x,y)
D. (y,x)
ANSWER: D
The number of matrices required to rotate an object about a point(1,1) are___________.
A. 1
B. 2
C. 3
D. 4
ANSWER: C
In X-shear transformation point(x,y)becomes_________.
A. (x+yb,xa+y)
B. (x+yb,y)
C. (x,xa+y)
D. None of these
ANSWER: BIf we take mirror reflection of a point (-x,y) along the origin then the point Becomes_________.
A. (x,-y)
B. (-y,-x)
C. (-x,y)
D. (y,x)
ANSWER: A
Shear transformation can be formed by scaling and rotation,justify True or False .
A. TRUE
B. FALSE
C. Not always
D. None of these
ANSWER: A
If a point (x,-y)is rotated along y axis by 180 degree in clockwise direction Followed by90 degree in anticlockwise
direction then it becomes__________.
A. (x,-y)
B. (-y,-x)
C. (-x,y)
D. (-y,x)
ANSWER: D
Which transformation needs homogeneous coordinates to represent it in Matrix from?
A. Scaling
B. Rotation
C. Translation
D. Reflection
ANSWER: C
Which of the following statement is not correct with respect to homogeneous coordinates?
A. It is used to combine transformations
B. Each point is represented as (xw,yw,w)
C. It is used for representing translation in matrix form
D. Homogeneous coordinates are represented in 2*2 matrix form
ANSWER: D
Any 2D point is represented in a matrix form with dimension as_________.
A. 1*2B. 2*1
C. 1*1
D. 2*2
ANSWER: A
Any 2D point in homogeneous coordinates is represented in a matix form with dimension as________.
A. 1*2
B. 2*1
C. 1*3
D. 3*1
ANSWER: C
Which of the following 2D transformation is not represented in matrix form in non homogeneous coordinate
system?
A. Scaling
B. Rotation
C. Translation
D. Reflection
ANSWER: C
If we need to tilt the 2D object in one direction then we have to use_____transformation.
A. Scaling
B. Translation
C. Shear
D. Rotation
ANSWER: C
If we need to tilt the height of the object keeping width same as original object then we have to
use________transformations.
A. Scaling in Y direction
B. Scaling
C. Y-shearing
D. X-shearing
ANSWER: B
If we need to shift the width of the object keeping height as unchanged,then we have to
use__________transformations.
A. TranslationB. Scaling
C. Y-shearing
D. X-shearing
ANSWER: D
In Scaling transformation Sx Indicate______.
A. Scaling factor along X axis
B. Translation factor along X axis
C. Tilting factor along X axis
D. None of these
ANSWER: A
In translation transformation Ty indicates____________.
A. Scaling factor along Y direction
B. Translation factor along Y direction
C. Tilting factor along Y direction
D. None of these
ANSWER: B
If the size of triangle needs to be doubled by keeping the center triangle at the same position as that of original
triangle. then we need to apply ______transformation.
A. Only scaling
B. Only translation
C. Scaling and translation
D. Scaling and Rotation
ANSWER: C
If we have applied scaling by 2 units in both directions and received final coordinates of the polygon, then to recover
the original coordinates of the polygon we have to apply scaling transformation with...
A. Sx=2, Sy=2
B. Sx=1/2, Sy=1/2
C. Sx=1/2, Sy=2
D. Sx=2, Sy=1/2
ANSWER: B
If have the final coordinates of the polygen, then to recover the original coordinates of polygen we have to
apply___________.
A. Scaling
B. TranslationC. Inverse transformation
D. None of these
ANSWER: C
Which of the following transformation are needed if we want to scale the object with respect to a point other than
origin?
A. Scaling
B. Transformation
C. Both a and b
D. Rotation
ANSWER: C
A point x(2,3) is reprensented in homogeneous coordinates as_________.
A. (2,3)
B. (2,3,1)
C. (2,3,1)
D. (2,3,0)
ANSWER: C
The transformation matrix is used for__________.
A. Reflection at X axis
B. Reflection at Y axis
C. Reflection at origin
D. None of these
ANSWER: B
The transformation matrix is used for__________.
A. Reflection at X axis
B. Reflection at Y axis
C. Reflection at origin
D. Reflection at line Y=X
ANSWER: C
The transformation matrix is used for__________.
A. Reflection at origin
B. Reflection at X axis
C. Reflection at Y axis
D. Reflection at the line Y=XANSWER: D
The transformation matrix is used for_____________.
A. Scaling
B. Y-shear
C. X-shear
D. None of these
ANSWER: B
If we rotate a triangle ABC having A(1,1), B(10,1), C(5,5) by 90 degree in anticlockwise direction then the ABC will
become________.
A. A(1,1), B(10,1), C(5,-5)
B. A(-1,1), B(-10,1), C(-5,5)
C. A(-1,1), B(-1,10), C(-5,5)
D. A(-1,1), B(-1,10), C(-5,-5)
ANSWER: B
Find out final co-ordinate of a figure bounded by co-ordinate A(2,1), B(2,3), C(4,2), D(4,2) with scale factor
Sx=Sy=3.
A. A(6,3), B(6,9), C(6,12), and D(12,6)
B. A(6,3), B(6,9), C(6,12), and DANSWER: B6,12)
C. A(6,3), B(6,9), C(12,6), and D(12,6)
D. A(6,3), B(9,6), C(12,6), and D(6,12)
ANSWER: C
If we perform X shear on a triangle having A(2,1), B(4,3), C(2,3). With constant value as 2 then the new coordinate
will be________.
A. A(4,1), B(10,3), C(2,3)
B. A(4,1), B(10,3), C(4,3)
C. A(2,5), B(4,11), C(2,7)
D. A(2,5), B(4,11), C(7,2)
ANSWER: B
If we perform Y shear on a triangle having A(2,1), B(4,3), C(2,3). With constant value as 2 then the new coordinate
will be_________.
A. A(4,1), B(10,3), C(2,3)
B. A(4,1), B(10,3), C(4,3)
C. A(2,5), B(4,11), C(2,7)
D. A(2,5), B(4,11), C(7,2)ANSWER: C
If we rotate a triangle ABC having A(0,0), B(6,0) and C(3,3) by 90 degree about origin in anticlockwise direction
then triangle ABC will become as_________.
A. A(0,0), B(0,6), C(-3,3)
B. A(0,0), B(6,0), C(-3,3)
C. A(0,0), B(0,6), C(3,-3)
D. A(0,0), B(6,0), C(3,-3)
ANSWER: A
If we translate the square ABCD whose co-ordinate are A(0,0), B(3,0), C(3,3) and D(0,3) by 2 units in both
directions then the new coordinates of ABCD will be______.
A. A(2,2) , B(3,2), C(5,5), D(0,5)
B. A(2,2) , B(5,2), C(5,5), D(2,5)
C. A(2,2) , B(5,2), C(3,3), D(2,5)
D. A(2,2) , B(3,2), C(5,5), D(2,5)
ANSWER: B
If we scale the square ABCD whose co-ordinate are A(2,2), B(5,2), C(5,5), D(2,5) by 1.5 and 0.5 units in X and Y
directions respectively then the new coordinates of ABCD will be______.
A. A(3,1) , B(7.5,1), C(7.5,5), D(3,5)
B. A(3,3) , B(7.5,3), C(7.5,7.5), D(3,7.5)
C. A(3,1) , B(7.5,1), C(7.5,2.5), D(3,2.5)
D. A(3,3) , B(5,3), C(5,7.5), D(3,7.5)
ANSWER: C
If we scale a square ABCD with co-ordinate A(0,0), B(5,0), C(5,5) and D(0,5) by 2 units for x-direction and 3 units
for y-directions, then the final coordinates will be______.
A. A(0,0) , B(0,10), C(15,10) and D(15,0)
B. A(0,0) , B(10,0), C(10,15) and D(0,15)
C. A(0,0) , B(10,0), C(15,10) and D(0,15)
D. A(0,0) , B(10,0), C(15,10) and D(15,0)
ANSWER: B
If a final polygon co-ordinates are A(7,3), B(9,3), C(9,5) and D(7,5). We have applied translation by 1 in both x of y-
direction. Then the original polygon coordinates will be______.
A. A(6,3) , B(8,3), C(8,5), D(6,5)
B. A(7,2) , B(9,2), C(9,4), D(7,4)
C. A(6,2) , B(8,2), C(8,4), D(6,4)
D. None of theseANSWER: C
In 3D viewing, the world co-ordinate position of the objects are converted into viewing co-ordinates by _________
transformation.
A. Viewing
B. Projection
C. Workstation
D. 3D
ANSWER: A
In 3D viewing, mismatch between 3D objects and 2D displays is compensated by introducing_________.
A. Transformation
B. Projection
C. Rotation
D. Translation
ANSWER: B
In 3D viewing, the _________transformation is used to convert 3D description of objects in viewing co-ordinates to
the 2D projection co-ordinates.
A. Viewing
B. Projection
C. Workstation
D. 3D
ANSWER: B
In 3D viewing, ____________-transformation transforms the projection co-ordinates into the device coordinates.
A. Viewing
B. Projection
C. Workstation
D. 3D
ANSWER: C
A view Plane normal vector is perpendicular to _____________.
A. View Plane
B. Projection Plane
C. Reference Plane
D. None of these
ANSWER: AThe length of a directed line segment (the view plane normal vector) from the view plane to the view reference point
is referred to as _________ distance.
A. Normal
B. Plane
C. View
D. Reference
ANSWER: C
Two Basic ways of projecting objects onto the view plane are _________ and _______- .
A. Serial, Parallel
B. Serial,Perspective
C. Parallel, Perspective
D. None of these
ANSWER: C
_____________ projection preserves relative proportions of the objects but does not produce the realistic views.
A. Serial
B. Perspective
C. Parallel
D. Any
ANSWER: C
_____________ projection produce the realistic views but does not preserves relative proportions.
A. Serial
B. Perspective
C. Parallel
D. Any
ANSWER: C
In perspective projection, the lines of projection converge at a single point called _________.
A. Center of projection
B. projection reference point
C. A & B
D. None of these
ANSWER: C
When the direction of the projection is normal to the view plane, we have an __________ parallel projection.
A. SerialB. Orthographic
C. Oblique
D. None of these
ANSWER: C
When the direction of the projection is not perpendicular to the view plane , we have an _______ parallel projection.
A. Serial
B. Orthographic
C. Oblique
D. None of these
ANSWER: C
The orthographic projection can display more that one face of an object, such an orthographic projection is called
__________ orthographic projection.
A. Axonometric
B. Isometric
C. Parallel
D. Perspective
ANSWER: A
The foreshortening factor is the ratio of the ____________.
A. Actual length of line to its projected length
B. Projected length of line to its true length
C. A Or B
D. None of these
ANSWER: B
Three types of axonometric projections are ________, _____, _________
A. Serial , Parallel, isometric
B. Paralle, Perspective , Isometric
C. Isometric, dimetric, trimetric
D. None of these
ANSWER: C
The vanishing point for any set of lines that are parallel to one of the three principle axes of an object is referred to as
a __________.
A. Principle vanishing point
B. Axis vanishing point
C. A or BD. None of these
ANSWER: C
The oblique projections are classified as ______ and ___________ projections.
A. Cavalier and Cabinet
B. Serial & Parallel
C. Parallel & Perspective
D. Isometric & dimetric
ANSWER: A
For the cavalier projection, the direction of projection makes a __________ angle with the view plane.
A. 40 degree
B. 45 degree
C. 63 degree
D. 63.4 Degree
ANSWER: B
When the direction of projection makes an angle of arc tan (2) = 63.4 degree with the view plane, the resulting view
is called a ____________ projection .
A. Parallel
B. Perspective
C. Cavalier
D. Cabinet
ANSWER: D
Cabinet projection appear ___________ realistic compared to cavalier projections.
A. More
B. Less
C. Equally
D. None of these
ANSWER: A
A Special form of the one-point perspective projection takes place when the vanishing point is placed centrally
within the figure.this type of projection is called a _________ projection.
A. Parallel
B. Perspective
C. Tunnel
D. Cavalier
ANSWER: CThe first viewing parameter in perspective projection we must consider is the?
A. Viewing window
B. Shift vector
C. View reference point
D. View reference plane
ANSWER: C
For a point (2,1,2) if we apply reflection about Y-axis, then the new point will become ___________.
A. (2,- 1,2)
B. (- 2,1,- 2)
C. (2,- 1,- 2)
D. (- 2,- 1,2)
ANSWER: B
Which of the following is not a type of perspective projection____________.
A. Isometric
B. One point
C. Two point
D. Three point
ANSWER: A
If we have applied scaling by 2 units in both directions and received final coordinates of the polygon, then to recover
the original coordinates of the polygon we have to apply scaling transformation with _____.
A. Sx = 2, Sy = 2
B. Sx = 1/2, Sy = 1/2
C. Sx = 1/2, Sy = 2
D. Sx = 2, Sy = 1/2
ANSWER: B
A cube is defined by 8 vertices A(0,0,0),B(2,0,0),C(2,2,0),D(0,2,0),E(0,0,2),F(0,0,2), G(2,0,2),H(2,2,2) After
translation by tx=1,ty=2,tz=1 resultant position is,
A. A(1,2,1), B(3,2,1), C(3,4,1), D(1,4,1), E(1,2,3), F(1,4,3),G(3,2,3), H(3,4,3)
B. A(1,2,1), B(1,2,3), C(3,4,1), D(1,1,1), E(1,2,3), F(1,4,3),G(3,2,3), H(3,3,3)
C. A(1,2,1), B(3,2,1), C(1,4,3), D(1,4,1), E(3,2,1), F(1,4,3),G(2,2,3), H(3,3,4)
D. None of the above.
ANSWER: A
After scaling a triangle having coordinates A(O,O),B(5,0), C(5,5) by 2 units in X and 3 units in Y direction, the new
coordinates will be_________.A. A(0,0),B(10,0), C(10,15)
B. A(0,0),B(10,15), C(10,0)
C. A(0,0),B(0,10), C(15,10)
D. A(2,3), B(10,0), C(10,15)
ANSWER: A
After performing Y-shear transformation we got A(2,5), B(4,11), C(2,7). If the constant value is 2 then the original
coordinates will be _________.
A. A(2,5), B(4,11), C(2,7)
B. A(2,l), B(4,3), C(2,3)
C. A(4,1), B(10,3), C(4,3)
D. A(5,11), B(3,4), C(3,2)
ANSWER: B
Subject:-Computer Graphics
Objective type questions Unit-IV Segment and Animation
The color options are numerically coded with the following values.
A. Ranging from 0 through the positive integer
B. Ranging from 0 to 1
C. Ranging from 0 to -0
D. Only c
ANSWER: A
In color raster system, the number of color choices available depends on_____________.
A. colors in frame buffer
B. Amount of storage provided per pixel in frame buffer
C. RGB color
D. Neither a nor b
ANSWER: B
The color code “000” is for________.
A. White
B. Black
C. Blue
D. Green
ANSWER: B
Color information can be stored in____________.
A. Main memory
B. Secondary memory
C. Graphics card
D. Frame buffer
ANSWER: D
Whenever a particular color code is specified in an application program, the corresponding binary value is placed in?
A. Color look-up table
B. Directly in frame buffer
C. a or b
D. Video lookup table
ANSWER: BThe range that specifies the gray or grayscale levels is___________.
A. The value range from -1 to 1
B. The value range from 0 to -1
C. The value range from 0 to 1
D. Any one of the above
ANSWER: C
With 3 bits per pixel, we can accommodate 8 gray levels. If we use 8 bits per pixel then what is the value of gray
levels?
A. 18 gray levels
B. 128 gray levels
C. 256 gray levels
D. No color
ANSWER: C
If any intensity input value near 0.33 would be stored as the binary value 1 in the frame buffer, then it
displays__________.
A. Dark green color
B. Light gray color
C. Dark gray color
D. White or black
ANSWER: C
RGB colors on internet applications are called___________.
A. Safe colors
B. Colors space
C. Web colors
D. Safe web colors
ANSWER: D
Equation that describes hue is ___________.
A. H = H-90
B. H = H-100
C. H = H-120
D. H = H-180
ANSWER: C
0 degree of red color in hue image will correspond to______________.
A. BoundaryB. Edges
C. White region
D. Black region
ANSWER: D
White color in a Cartesian coordinate system can be represented as____________.
A. (0,1,1)
B. (0,1,0)
C. (0,0,1)
D. (1,1,1)
ANSWER: D
Color model is also called___________.
A. color system
B. color space
C. color area
D. Both A and B
ANSWER: D
The additive color models use the concept of___________.
A. Printing ink
B. Light to display color
C. Printing line
D. None of these
ANSWER: B
The subtractive color model use the concept of ____________.
A. Printing ink
B. Light to display color
C. Printing line
D. None of these
ANSWER: A
Color apparent in additive model are the result of
A. Reflected light
B. Transmission of light
C. Flow of light
D. None of theseANSWER: B
Color apparent in subtractive model are the result of
A. Amount of Reflected light
B. Transmission of light
C. Flow of light
D. None of these
ANSWER: A
Two dimensional color model are_____________.
A. RGB and CMKY
B. RBG and CYMK
C. RGB and CMYK
D. None
ANSWER: C
RGB model are used for____________.
A. Computer display
B. Printing
C. Painting
D. None of these
ANSWER: A
CMYK model are used for______________-.
A. Computer display
B. Printing
C. Painting
D. None of these
ANSWER: B
The intersection of three primary RGB color produces________.
A. White color
B. Black color
C. Magenta color
D. Blue color
ANSWER: A
The intersection of primary CMYK color produces__________.
A. White colorB. Black color
C. Cyan color
D. Magenta color
ANSWER: B
The RGB model display a much _______ percentage of the visible band as compared to CMYK.
A. Lesser
B. Larger
C. Medium
D. None of these
ANSWER: B
Color depth can be defined by ________ which can be displayed on a display unit.
A. Bits per pixel
B. Bytes per pixel
C. Megabyte per pixel
D. None of these
ANSWER: A
Each bit represent
A. One color
B. Two color
C. Three color
D. None
ANSWER: A
RGB true color model has _______ color depth.
A. 24bit
B. 32bit
C. 64bit
D. None
ANSWER: A
CMYK true color model has _______ color depth.
A. 24bit
B. 32bit
C. 64bit
D. NoneANSWER: B
Hue and saturation, both together produce_________.
A. Brightness
B. Transitivity
C. Chromaticity
D. Reflectivity
ANSWER: C
0 degree of red color in hue image will correspond to________.
A. Boundary
B. Edges
C. White region
D. black region
ANSWER: D
Green plus blue color produces________.
A. Yellow
B. Red
C. Magenta
D. Cyan
ANSWER: D
Three primary colors are_________.
A. Red, green, blue
B. Red, cyan, blue
C. Red, white, black
D. Red, green, yellow
ANSWER: A
Total amount of energy from light source is called________.
A. Brightness
B. Reflectance
C. Luminance
D. Radiance
ANSWER: D
Hues opposites to each others are known as____________.
A. EdgesB. Boundaries
C. Complements
D. Saturation
ANSWER: C
Color spectrum consists of__________.
A. 4 colors
B. 6 colors
C. 7 colors
D. 8 colors
ANSWER: C
One that is not a color model is__________.
A. RCB
B. CMYK
C. RGB
D. HSI
ANSWER: A
Intensity can be converted to color transformation by assigning colors to___________.
A. pixels
B. coordinates
C. pixel depth
D. intensity levels
ANSWER: D
Color model used for monitors is__________.
A. CMYK
B. BGR
C. RGB
D. CMR
ANSWER: C
The dynamic effect of an image is called_________.
A. Video
B. Animation
C. Super sampling
D. None of theseANSWER: B
The animation can be defined as a collection of images played in______.
A. Not sequence
B. Defined sequence
C. Both a & b
D. None of these
ANSWER: B
When sound is included in the animation, it become____________.
A. Audio
B. Video
C. Both a & b
D. None of these
ANSWER: B
Many online animation tools are used to create animation in the form of___________.
A. JPEG image
B. PDF image
C. GIF image
D. None of these
ANSWER: C
The types of animation are__________.
A. Traditional animation
B. Computer animation
C. Both a & b
D. None of these
ANSWER: C
The types of computer animation are____________.
A. 2D computer animation
B. 3D computer animation
C. Both a & b
D. None of these
ANSWER: C
In computer graphics, a graphical object is known as____________.
A. PointB. Segment
C. Parameter
D. None of these
ANSWER:
B
An object can be viewed as a collection of__________.
A. One segment
B. Two segment
C. Several segments
D. None of these
ANSWER:
C
Every segment has its own attributes like________.
A. Size, visibility
B. Start position
C. Image transformation
D. All of these
ANSWER:
D
By using the attributes of segment , we can________ any segment.
A. Control
B. Print
C. None of these
D. Change
ANSWER:
A
A two-dimensional array contain the details of all the segment are called________.
A. Segmentation table
B. Segment name
C. Operation
D. None of these
ANSWER: A
We assign all the attributes of segment under the________.
A. Segment Name
B. Segment size
C. Array
D. None of theseANSWER: A
The initial size of segment will be_______.
A. 1
B. 0
C. 2
D. 3
ANSWER: C
The removal of a segment with its details are called________.
A. Alter the segments
B. Deletion of segments
C. Closing the segment
D. None of these
ANSWER: B
Deletion of any segment is much________ than creation of any new segment.
A. Easier
B. Difficult
C. Higher
D. None of these
ANSWER:
B
When a display file is divided into number of subparts then each part is called as____.
A. Segment
B. Page
C. Image
D. Structure
ANSWER: A
A segment is a __________.
A. Small part of the whole scene
B. The complete scene
C. The collection of all pictures of the scene
D. None of these
ANSWER: A
Segments are called as structures in ____________ System.
A. GKSB. PHIGS
C. Core
D. CGM
ANSWER: C
Which of the following attribute of the segment is used to make changes in image?
A. Visibility
B. Segment name
C. Image Transformation
D. Segment Size
ANSWER:
D
Which of the following is not applied on segment?
A. Delete
B. Create
C. Close
D. Search
ANSWER: D
Which of the following operation is valid on Segment?
A. Copy
B. Search
C. Rename
D. Update
ANSWER: C
_______ attribute of segment is used to uniquely identify a particular segment.
A. Segment Start
B. Segment Name
C. Segment Size
D. Visibility
ANSWER: B
We can not have more than one segment open at a time. Statement true or false
A. TRUE
B. FALSE
C. Sometimes
D. None of theseANSWER: A
The segment name is must be unique. State true or false.
A. TRUE
B. FALSE
C. Sometimes
D. None of these
ANSWER: A
For creation of new segment, we have to write ___________.
A. Seg_Start [Seg_Name]=Next free location in display file
B. Seg_Start [Seg_Name]= Current location in display file
C. Seg_Start [Seg_Start]=Next free location in display file
D. Seg_Start [Seg_Start]=Current location in display file
ANSWER: A
The default value of Visibility attribute is ______.
A. OFF
B. ON
C. 0
D. 1
ANSWER: C
Segment Name always start from_________.
A. 0
B. 1
C. -1
D) None of these
ANSWER: C
To delete a particular segment________.
A. Set Visibility attribute of that segment as OFF.
B. Shift all next segments up and overlap the segment to be deleted.
C. Make the size of the segment to be deleted as zero in segment table and update the segment start attribute of next
segment.
D. Both B & C
ANSWER: D
To delete all the segments simultaneusly_______.A. Set size of all segments to zero
B. Set visibility attribute of all segment as OFF
C. Set segment start of all the segment to one
D. Both A & C
ANSWER: A
After deleting a particular segment, .................. attribute of all next segments needs modification.
A. Segment Size
B. Segment start
C. Segment name
D. Visibility
ANSWER: C
After deleting a particular segment, the segment start attribute of all next segment become_________.
A. Segment start of a particular segment - size of segment to be deleted
B. Segment Start of particular segment - Size of segment start of segment to be deleted.
C. Segment start of particular segment - size of next segment
D. None of these
ANSWER: A
The segment is opened if_______.
A. The segment name is not in sorted order
B. More than two segments are not having same segment name
C. Segment name is starting from one
D. None of these
ANSWER: D
Which of the following statement says segment is invalid?
A. if the size of segment is zero.
B. If the segment name is zero
C. if two segment starts from same location.
D. None of these
ANSWER: C
Double Buffering concept in segments is nothing but_______.
A. maintaing two temporary buffers
B. Maintating two images
C. Modifying the existing imageD. None of these
ANSWER: C
Segment Renaming means_____.
A. copying old segment name to new segment
B. Assigning new segment name to existing segment.
C. Assigning same name for two segments
D. None of thes
ANSWER: B
It is necessary to organize the dispiay file in such away that it will be divided into several ______, which posses the
portion of overall picture.
A. Line
B. Pixel
C. Segment
D. Curves
ANSWER:
C
Which is not attribute associated with segment?
A. Segment no
B. Segment start
C. Segment size
D. Length
ANSWER: D
This attribute/field additionaliy used in segment linked list___.
A. Colour
B. Visibility
C. Scalex
D. Link
ANSWER: A
Which process is used to keep replication of original segment?
A. Create segment
B. Close segment
C. Rename segment
D. Delete segment
ANSWER: D
Objective type questions Unit-III 2-D, 3-D Transformations and Projections
If we multiply any matrix with___matrix then we get the original matrix A___.
A. Scaling matrix
B. Translation matrix
C. Identity matrix
D. Opposite matrix
ANSWER: C
A Pixel is represented dy a tuple Xw,Yw,w in______.
A. Normalised Device Coordinates
B. Homogeneous coordinates system
C. 3D coordinate system
D. None of these
ANSWER: B
A _______ transformation alters the size of an object.
A. Scaling
B. Rotation
C. Translation
D. Shear
ANSWER: A
If the angle Q is positive then the rotation direction will be _________.
A. Clockwise
B. Anticlockwise
C. Parallel
D. Perpendicular
ANSWER: B
Reflection of a point about x-axis ,followed by a conter-clockwise rotation of 90 ̊ is equivalent to reflection about the
line ______.
A. X=-Y
B. Y=-X
C. X=Y
D. X+Y=1
ANSWER: CThe shape of the object gets by _________transformation.
A. Scaling
B. Rotation
C. Translation
D. Shear
ANSWER: D
A_______is a transformation that produces a mirror image of an object.
A. Scaling
B. Translation
C. Reflection
D. Both B & C
ANSWER: C
If we multiply any matrix A with identity matrix then we get the________matrix.
A. Identity matrix
B. Translation matrix
C. Scaling matrix
D. Original matrix
ANSWER: D
In homogeneous co-ordinate system a pixel is represented as ____________.
A. X,Y
B. X,Y,Z
C. X,Y,W
D. Xw,Yw,w
ANSWER: D
Two consecutive transformation t1 and t2 are _________.
A. Additive
B. Substractive
C. Multiplicative
D. None of these
ANSWER: A
Reflection about the line Y=X is equivalent to ________,followed by a anticlockwise rotation 90 ̊.
A. Reflection about y-axis
B. Reflection about x-axisC. Reflection about origin
D. None of these
ANSWER: B
Two consecutive scaling transformation t1 and t2 are __________.
A. Additive
B. Substractive
C. Multiplicative
D. None of these
ANSWER: C
After scaling a triangle having coordinates A(0,0),B(5,0),C(5,5)by 2 units in X and 3 units in Y direction the new
coordinates will be___________.
A. A(0,0),B(10,0),C(10,15)
B. A(0,0),B(10,15),C(10,0)
C. A(0,0),B(0,10),C(15,10)
D. A(2,3),B(10,0),C(10,15)
ANSWER: A
After performing Y-shear transformation we got A(2,5),B(4,11),C(2,7).If the constant value is 2 then original
coordinates will be___________.
A. A(2,5),B(4,11),C(2,7)
B. A(2,1),B(4,3),C(2,3)
C. A(4,1),B(10,3),C(4,3)
D. A(5,11),B(3,4),C(3,2)
ANSWER: B
After rotating a triangle having A(0,0),B(6,0),C(3,3) by 90 ̊about origin in anticlockwise direction,thenresultin
triangle will be_____.
A. A(0,0),B(3,-3),C(0,6)
B. A(0,0),B(-3,3),C(0,6)
C. A(0,0),B(0,-6),C(3,-3)
D. A(0,0),B(0,6),C(-3,3)
ANSWER: D
The point (x,y) becomes (y,x) in____________transformation.
A. Reflection about origin y-axis
B. Reflection about x-axis
C. Reflection at line Y=XD. Reflection about y-axis
ANSWER: C
Which of the following transformation is not used in rotation about arbitrary point in 2D?
A. Scaling
B. Rotation
C. Translation
D. None of these
ANSWER: A
After performing X-shear on triangle having A(2,1),B(4,3)C(2,3) with the constant value as 2,the resultant triangle
will be______.
A. A(2,5),B(4,1),C(2,7)
B. A(10,3),B(4,5),C(4,1)
C. A(4,1),B(10,3),C(4,3)
D. A(5,2),B(4,11),C(7,2)
ANSWER: C
If the resultant object is given along with the set of transformations applied on it, then to find the original object we
have to use___________.
A. Affine transformation
B. Reverse transformation
C. Normal transformation
D. Inverse transformation
ANSWER: D
Two consecutive rotation transformation are always__________.
A. Additive
B. Subtractive
C. Multiplicative
D. None of these
ANSWER: A
Two consecutive rotation transformation are always commutative____________.
A. TRUE
B. FALSE
C. Not always
D. None of these
ANSWER: AA point (x,y) becomes (-x,y) in__________transformation.
A. Reflection at X axis
B. Reflection at Y axis
C. Reflection at origin
D. Reflection about line Y=X
ANSWER: B
In Y-shear transformation point (x,y) becomes_______.
A. x+yb,xa+y
B. x+yb,y
C. x,xa+y
D. None of these
ANSWER: C
Reflection about X-axis followed by reflection about Y-axis is equivalent to_______.
A. Reflection about line Y= X
B. Reflection about origin
C. Reflection about line Y=-X
D. Reflection about Y-axis
ANSWER: B
Two consecutive scaling transformation are always commutative___________.
A. TRUE
B. FALSE
C. Not always
D. None of these
ANSWER: A
If a circle is scaled in only one direction then it will become___________.
A. Parabola
B. Hyperbola
C. Ellipse
D. Circle
ANSWER: C
The transformation that changes the co-ordinate positions of an object along a circular path is called_______.
A. Translation
B. ScalingC. Rotation
D. Reflection
ANSWER: C
The result of two successive 2D rotations R(Q1) and R(Q2) is___________.
A. R(Q1+Q2)
B. R(Q1.Q2)
C. R(Q1-Q2)
D. R(Q1/Q2)
ANSWER: A
If we take mirror reflection of a points(x,y) along x-axis then the point becomes_________.
A. (x,-y)
B. (-x,-y)
C. (-x,y)
D. (y,x)
ANSWER: A
If we take mirror reflection of a points(x,y) along the line Y=X then the point becomes________.
A. (x,-y)
B. (-y,-x)
C. (-x,y)
D. (y,x)
ANSWER: D
The number of matrices required to rotate an object about a point(1,1) are___________.
A. 1
B. 2
C. 3
D. 4
ANSWER: C
In X-shear transformation point(x,y)becomes_________.
A. (x+yb,xa+y)
B. (x+yb,y)
C. (x,xa+y)
D. None of these
ANSWER: BIf we take mirror reflection of a point (-x,y) along the origin then the point Becomes_________.
A. (x,-y)
B. (-y,-x)
C. (-x,y)
D. (y,x)
ANSWER: A
Shear transformation can be formed by scaling and rotation,justify True or False .
A. TRUE
B. FALSE
C. Not always
D. None of these
ANSWER: A
If a point (x,-y)is rotated along y axis by 180 degree in clockwise direction Followed by90 degree in anticlockwise
direction then it becomes__________.
A. (x,-y)
B. (-y,-x)
C. (-x,y)
D. (-y,x)
ANSWER: D
Which transformation needs homogeneous coordinates to represent it in Matrix from?
A. Scaling
B. Rotation
C. Translation
D. Reflection
ANSWER: C
Which of the following statement is not correct with respect to homogeneous coordinates?
A. It is used to combine transformations
B. Each point is represented as (xw,yw,w)
C. It is used for representing translation in matrix form
D. Homogeneous coordinates are represented in 2*2 matrix form
ANSWER: D
Any 2D point is represented in a matrix form with dimension as_________.
A. 1*2B. 2*1
C. 1*1
D. 2*2
ANSWER: A
Any 2D point in homogeneous coordinates is represented in a matix form with dimension as________.
A. 1*2
B. 2*1
C. 1*3
D. 3*1
ANSWER: C
Which of the following 2D transformation is not represented in matrix form in non homogeneous coordinate
system?
A. Scaling
B. Rotation
C. Translation
D. Reflection
ANSWER: C
If we need to tilt the 2D object in one direction then we have to use_____transformation.
A. Scaling
B. Translation
C. Shear
D. Rotation
ANSWER: C
If we need to tilt the height of the object keeping width same as original object then we have to
use________transformations.
A. Scaling in Y direction
B. Scaling
C. Y-shearing
D. X-shearing
ANSWER: B
If we need to shift the width of the object keeping height as unchanged,then we have to
use__________transformations.
A. TranslationB. Scaling
C. Y-shearing
D. X-shearing
ANSWER: D
In Scaling transformation Sx Indicate______.
A. Scaling factor along X axis
B. Translation factor along X axis
C. Tilting factor along X axis
D. None of these
ANSWER: A
In translation transformation Ty indicates____________.
A. Scaling factor along Y direction
B. Translation factor along Y direction
C. Tilting factor along Y direction
D. None of these
ANSWER: B
If the size of triangle needs to be doubled by keeping the center triangle at the same position as that of original
triangle. then we need to apply ______transformation.
A. Only scaling
B. Only translation
C. Scaling and translation
D. Scaling and Rotation
ANSWER: C
If we have applied scaling by 2 units in both directions and received final coordinates of the polygon, then to recover
the original coordinates of the polygon we have to apply scaling transformation with...
A. Sx=2, Sy=2
B. Sx=1/2, Sy=1/2
C. Sx=1/2, Sy=2
D. Sx=2, Sy=1/2
ANSWER: B
If have the final coordinates of the polygen, then to recover the original coordinates of polygen we have to
apply___________.
A. Scaling
B. TranslationC. Inverse transformation
D. None of these
ANSWER: C
Which of the following transformation are needed if we want to scale the object with respect to a point other than
origin?
A. Scaling
B. Transformation
C. Both a and b
D. Rotation
ANSWER: C
A point x(2,3) is reprensented in homogeneous coordinates as_________.
A. (2,3)
B. (2,3,1)
C. (2,3,1)
D. (2,3,0)
ANSWER: C
The transformation matrix is used for__________.
A. Reflection at X axis
B. Reflection at Y axis
C. Reflection at origin
D. None of these
ANSWER: B
The transformation matrix is used for__________.
A. Reflection at X axis
B. Reflection at Y axis
C. Reflection at origin
D. Reflection at line Y=X
ANSWER: C
The transformation matrix is used for__________.
A. Reflection at origin
B. Reflection at X axis
C. Reflection at Y axis
D. Reflection at the line Y=XANSWER: D
The transformation matrix is used for_____________.
A. Scaling
B. Y-shear
C. X-shear
D. None of these
ANSWER: B
If we rotate a triangle ABC having A(1,1), B(10,1), C(5,5) by 90 degree in anticlockwise direction then the ABC will
become________.
A. A(1,1), B(10,1), C(5,-5)
B. A(-1,1), B(-10,1), C(-5,5)
C. A(-1,1), B(-1,10), C(-5,5)
D. A(-1,1), B(-1,10), C(-5,-5)
ANSWER: B
Find out final co-ordinate of a figure bounded by co-ordinate A(2,1), B(2,3), C(4,2), D(4,2) with scale factor
Sx=Sy=3.
A. A(6,3), B(6,9), C(6,12), and D(12,6)
B. A(6,3), B(6,9), C(6,12), and DANSWER: B6,12)
C. A(6,3), B(6,9), C(12,6), and D(12,6)
D. A(6,3), B(9,6), C(12,6), and D(6,12)
ANSWER: C
If we perform X shear on a triangle having A(2,1), B(4,3), C(2,3). With constant value as 2 then the new coordinate
will be________.
A. A(4,1), B(10,3), C(2,3)
B. A(4,1), B(10,3), C(4,3)
C. A(2,5), B(4,11), C(2,7)
D. A(2,5), B(4,11), C(7,2)
ANSWER: B
If we perform Y shear on a triangle having A(2,1), B(4,3), C(2,3). With constant value as 2 then the new coordinate
will be_________.
A. A(4,1), B(10,3), C(2,3)
B. A(4,1), B(10,3), C(4,3)
C. A(2,5), B(4,11), C(2,7)
D. A(2,5), B(4,11), C(7,2)ANSWER: C
If we rotate a triangle ABC having A(0,0), B(6,0) and C(3,3) by 90 degree about origin in anticlockwise direction
then triangle ABC will become as_________.
A. A(0,0), B(0,6), C(-3,3)
B. A(0,0), B(6,0), C(-3,3)
C. A(0,0), B(0,6), C(3,-3)
D. A(0,0), B(6,0), C(3,-3)
ANSWER: A
If we translate the square ABCD whose co-ordinate are A(0,0), B(3,0), C(3,3) and D(0,3) by 2 units in both
directions then the new coordinates of ABCD will be______.
A. A(2,2) , B(3,2), C(5,5), D(0,5)
B. A(2,2) , B(5,2), C(5,5), D(2,5)
C. A(2,2) , B(5,2), C(3,3), D(2,5)
D. A(2,2) , B(3,2), C(5,5), D(2,5)
ANSWER: B
If we scale the square ABCD whose co-ordinate are A(2,2), B(5,2), C(5,5), D(2,5) by 1.5 and 0.5 units in X and Y
directions respectively then the new coordinates of ABCD will be______.
A. A(3,1) , B(7.5,1), C(7.5,5), D(3,5)
B. A(3,3) , B(7.5,3), C(7.5,7.5), D(3,7.5)
C. A(3,1) , B(7.5,1), C(7.5,2.5), D(3,2.5)
D. A(3,3) , B(5,3), C(5,7.5), D(3,7.5)
ANSWER: C
If we scale a square ABCD with co-ordinate A(0,0), B(5,0), C(5,5) and D(0,5) by 2 units for x-direction and 3 units
for y-directions, then the final coordinates will be______.
A. A(0,0) , B(0,10), C(15,10) and D(15,0)
B. A(0,0) , B(10,0), C(10,15) and D(0,15)
C. A(0,0) , B(10,0), C(15,10) and D(0,15)
D. A(0,0) , B(10,0), C(15,10) and D(15,0)
ANSWER: B
If a final polygon co-ordinates are A(7,3), B(9,3), C(9,5) and D(7,5). We have applied translation by 1 in both x of y-
direction. Then the original polygon coordinates will be______.
A. A(6,3) , B(8,3), C(8,5), D(6,5)
B. A(7,2) , B(9,2), C(9,4), D(7,4)
C. A(6,2) , B(8,2), C(8,4), D(6,4)
D. None of theseANSWER: C
In 3D viewing, the world co-ordinate position of the objects are converted into viewing co-ordinates by _________
transformation.
A. Viewing
B. Projection
C. Workstation
D. 3D
ANSWER: A
In 3D viewing, mismatch between 3D objects and 2D displays is compensated by introducing_________.
A. Transformation
B. Projection
C. Rotation
D. Translation
ANSWER: B
In 3D viewing, the _________transformation is used to convert 3D description of objects in viewing co-ordinates to
the 2D projection co-ordinates.
A. Viewing
B. Projection
C. Workstation
D. 3D
ANSWER: B
In 3D viewing, ____________-transformation transforms the projection co-ordinates into the device coordinates.
A. Viewing
B. Projection
C. Workstation
D. 3D
ANSWER: C
A view Plane normal vector is perpendicular to _____________.
A. View Plane
B. Projection Plane
C. Reference Plane
D. None of these
ANSWER: AThe length of a directed line segment (the view plane normal vector) from the view plane to the view reference point
is referred to as _________ distance.
A. Normal
B. Plane
C. View
D. Reference
ANSWER: C
Two Basic ways of projecting objects onto the view plane are _________ and _______- .
A. Serial, Parallel
B. Serial,Perspective
C. Parallel, Perspective
D. None of these
ANSWER: C
_____________ projection preserves relative proportions of the objects but does not produce the realistic views.
A. Serial
B. Perspective
C. Parallel
D. Any
ANSWER: C
_____________ projection produce the realistic views but does not preserves relative proportions.
A. Serial
B. Perspective
C. Parallel
D. Any
ANSWER: C
In perspective projection, the lines of projection converge at a single point called _________.
A. Center of projection
B. projection reference point
C. A & B
D. None of these
ANSWER: C
When the direction of the projection is normal to the view plane, we have an __________ parallel projection.
A. SerialB. Orthographic
C. Oblique
D. None of these
ANSWER: C
When the direction of the projection is not perpendicular to the view plane , we have an _______ parallel projection.
A. Serial
B. Orthographic
C. Oblique
D. None of these
ANSWER: C
The orthographic projection can display more that one face of an object, such an orthographic projection is called
__________ orthographic projection.
A. Axonometric
B. Isometric
C. Parallel
D. Perspective
ANSWER: A
The foreshortening factor is the ratio of the ____________.
A. Actual length of line to its projected length
B. Projected length of line to its true length
C. A Or B
D. None of these
ANSWER: B
Three types of axonometric projections are ________, _____, _________
A. Serial , Parallel, isometric
B. Paralle, Perspective , Isometric
C. Isometric, dimetric, trimetric
D. None of these
ANSWER: C
The vanishing point for any set of lines that are parallel to one of the three principle axes of an object is referred to as
a __________.
A. Principle vanishing point
B. Axis vanishing point
C. A or BD. None of these
ANSWER: C
The oblique projections are classified as ______ and ___________ projections.
A. Cavalier and Cabinet
B. Serial & Parallel
C. Parallel & Perspective
D. Isometric & dimetric
ANSWER: A
For the cavalier projection, the direction of projection makes a __________ angle with the view plane.
A. 40 degree
B. 45 degree
C. 63 degree
D. 63.4 Degree
ANSWER: B
When the direction of projection makes an angle of arc tan (2) = 63.4 degree with the view plane, the resulting view
is called a ____________ projection .
A. Parallel
B. Perspective
C. Cavalier
D. Cabinet
ANSWER: D
Cabinet projection appear ___________ realistic compared to cavalier projections.
A. More
B. Less
C. Equally
D. None of these
ANSWER: A
A Special form of the one-point perspective projection takes place when the vanishing point is placed centrally
within the figure.this type of projection is called a _________ projection.
A. Parallel
B. Perspective
C. Tunnel
D. Cavalier
ANSWER: CThe first viewing parameter in perspective projection we must consider is the?
A. Viewing window
B. Shift vector
C. View reference point
D. View reference plane
ANSWER: C
For a point (2,1,2) if we apply reflection about Y-axis, then the new point will become ___________.
A. (2,- 1,2)
B. (- 2,1,- 2)
C. (2,- 1,- 2)
D. (- 2,- 1,2)
ANSWER: B
Which of the following is not a type of perspective projection____________.
A. Isometric
B. One point
C. Two point
D. Three point
ANSWER: A
If we have applied scaling by 2 units in both directions and received final coordinates of the polygon, then to recover
the original coordinates of the polygon we have to apply scaling transformation with _____.
A. Sx = 2, Sy = 2
B. Sx = 1/2, Sy = 1/2
C. Sx = 1/2, Sy = 2
D. Sx = 2, Sy = 1/2
ANSWER: B
A cube is defined by 8 vertices A(0,0,0),B(2,0,0),C(2,2,0),D(0,2,0),E(0,0,2),F(0,0,2), G(2,0,2),H(2,2,2) After
translation by tx=1,ty=2,tz=1 resultant position is,
A. A(1,2,1), B(3,2,1), C(3,4,1), D(1,4,1), E(1,2,3), F(1,4,3),G(3,2,3), H(3,4,3)
B. A(1,2,1), B(1,2,3), C(3,4,1), D(1,1,1), E(1,2,3), F(1,4,3),G(3,2,3), H(3,3,3)
C. A(1,2,1), B(3,2,1), C(1,4,3), D(1,4,1), E(3,2,1), F(1,4,3),G(2,2,3), H(3,3,4)
D. None of the above.
ANSWER: A
After scaling a triangle having coordinates A(O,O),B(5,0), C(5,5) by 2 units in X and 3 units in Y direction, the new
coordinates will be_________.A. A(0,0),B(10,0), C(10,15)
B. A(0,0),B(10,15), C(10,0)
C. A(0,0),B(0,10), C(15,10)
D. A(2,3), B(10,0), C(10,15)
ANSWER: A
After performing Y-shear transformation we got A(2,5), B(4,11), C(2,7). If the constant value is 2 then the original
coordinates will be _________.
A. A(2,5), B(4,11), C(2,7)
B. A(2,l), B(4,3), C(2,3)
C. A(4,1), B(10,3), C(4,3)
D. A(5,11), B(3,4), C(3,2)
ANSWER: B
Subject:-Computer Graphics
Objective type questions Unit-IV Segment and Animation
The color options are numerically coded with the following values.
A. Ranging from 0 through the positive integer
B. Ranging from 0 to 1
C. Ranging from 0 to -0
D. Only c
ANSWER: A
In color raster system, the number of color choices available depends on_____________.
A. colors in frame buffer
B. Amount of storage provided per pixel in frame buffer
C. RGB color
D. Neither a nor b
ANSWER: B
The color code “000” is for________.
A. White
B. Black
C. Blue
D. Green
ANSWER: B
Color information can be stored in____________.
A. Main memory
B. Secondary memory
C. Graphics card
D. Frame buffer
ANSWER: D
Whenever a particular color code is specified in an application program, the corresponding binary value is placed in?
A. Color look-up table
B. Directly in frame buffer
C. a or b
D. Video lookup table
ANSWER: BThe range that specifies the gray or grayscale levels is___________.
A. The value range from -1 to 1
B. The value range from 0 to -1
C. The value range from 0 to 1
D. Any one of the above
ANSWER: C
With 3 bits per pixel, we can accommodate 8 gray levels. If we use 8 bits per pixel then what is the value of gray
levels?
A. 18 gray levels
B. 128 gray levels
C. 256 gray levels
D. No color
ANSWER: C
If any intensity input value near 0.33 would be stored as the binary value 1 in the frame buffer, then it
displays__________.
A. Dark green color
B. Light gray color
C. Dark gray color
D. White or black
ANSWER: C
RGB colors on internet applications are called___________.
A. Safe colors
B. Colors space
C. Web colors
D. Safe web colors
ANSWER: D
Equation that describes hue is ___________.
A. H = H-90
B. H = H-100
C. H = H-120
D. H = H-180
ANSWER: C
0 degree of red color in hue image will correspond to______________.
A. BoundaryB. Edges
C. White region
D. Black region
ANSWER: D
White color in a Cartesian coordinate system can be represented as____________.
A. (0,1,1)
B. (0,1,0)
C. (0,0,1)
D. (1,1,1)
ANSWER: D
Color model is also called___________.
A. color system
B. color space
C. color area
D. Both A and B
ANSWER: D
The additive color models use the concept of___________.
A. Printing ink
B. Light to display color
C. Printing line
D. None of these
ANSWER: B
The subtractive color model use the concept of ____________.
A. Printing ink
B. Light to display color
C. Printing line
D. None of these
ANSWER: A
Color apparent in additive model are the result of
A. Reflected light
B. Transmission of light
C. Flow of light
D. None of theseANSWER: B
Color apparent in subtractive model are the result of
A. Amount of Reflected light
B. Transmission of light
C. Flow of light
D. None of these
ANSWER: A
Two dimensional color model are_____________.
A. RGB and CMKY
B. RBG and CYMK
C. RGB and CMYK
D. None
ANSWER: C
RGB model are used for____________.
A. Computer display
B. Printing
C. Painting
D. None of these
ANSWER: A
CMYK model are used for______________-.
A. Computer display
B. Printing
C. Painting
D. None of these
ANSWER: B
The intersection of three primary RGB color produces________.
A. White color
B. Black color
C. Magenta color
D. Blue color
ANSWER: A
The intersection of primary CMYK color produces__________.
A. White colorB. Black color
C. Cyan color
D. Magenta color
ANSWER: B
The RGB model display a much _______ percentage of the visible band as compared to CMYK.
A. Lesser
B. Larger
C. Medium
D. None of these
ANSWER: B
Color depth can be defined by ________ which can be displayed on a display unit.
A. Bits per pixel
B. Bytes per pixel
C. Megabyte per pixel
D. None of these
ANSWER: A
Each bit represent
A. One color
B. Two color
C. Three color
D. None
ANSWER: A
RGB true color model has _______ color depth.
A. 24bit
B. 32bit
C. 64bit
D. None
ANSWER: A
CMYK true color model has _______ color depth.
A. 24bit
B. 32bit
C. 64bit
D. NoneANSWER: B
Hue and saturation, both together produce_________.
A. Brightness
B. Transitivity
C. Chromaticity
D. Reflectivity
ANSWER: C
0 degree of red color in hue image will correspond to________.
A. Boundary
B. Edges
C. White region
D. black region
ANSWER: D
Green plus blue color produces________.
A. Yellow
B. Red
C. Magenta
D. Cyan
ANSWER: D
Three primary colors are_________.
A. Red, green, blue
B. Red, cyan, blue
C. Red, white, black
D. Red, green, yellow
ANSWER: A
Total amount of energy from light source is called________.
A. Brightness
B. Reflectance
C. Luminance
D. Radiance
ANSWER: D
Hues opposites to each others are known as____________.
A. EdgesB. Boundaries
C. Complements
D. Saturation
ANSWER: C
Color spectrum consists of__________.
A. 4 colors
B. 6 colors
C. 7 colors
D. 8 colors
ANSWER: C
One that is not a color model is__________.
A. RCB
B. CMYK
C. RGB
D. HSI
ANSWER: A
Intensity can be converted to color transformation by assigning colors to___________.
A. pixels
B. coordinates
C. pixel depth
D. intensity levels
ANSWER: D
Color model used for monitors is__________.
A. CMYK
B. BGR
C. RGB
D. CMR
ANSWER: C
The dynamic effect of an image is called_________.
A. Video
B. Animation
C. Super sampling
D. None of theseANSWER: B
The animation can be defined as a collection of images played in______.
A. Not sequence
B. Defined sequence
C. Both a & b
D. None of these
ANSWER: B
When sound is included in the animation, it become____________.
A. Audio
B. Video
C. Both a & b
D. None of these
ANSWER: B
Many online animation tools are used to create animation in the form of___________.
A. JPEG image
B. PDF image
C. GIF image
D. None of these
ANSWER: C
The types of animation are__________.
A. Traditional animation
B. Computer animation
C. Both a & b
D. None of these
ANSWER: C
The types of computer animation are____________.
A. 2D computer animation
B. 3D computer animation
C. Both a & b
D. None of these
ANSWER: C
In computer graphics, a graphical object is known as____________.
A. PointB. Segment
C. Parameter
D. None of these
ANSWER:
B
An object can be viewed as a collection of__________.
A. One segment
B. Two segment
C. Several segments
D. None of these
ANSWER:
C
Every segment has its own attributes like________.
A. Size, visibility
B. Start position
C. Image transformation
D. All of these
ANSWER:
D
By using the attributes of segment , we can________ any segment.
A. Control
B. Print
C. None of these
D. Change
ANSWER:
A
A two-dimensional array contain the details of all the segment are called________.
A. Segmentation table
B. Segment name
C. Operation
D. None of these
ANSWER: A
We assign all the attributes of segment under the________.
A. Segment Name
B. Segment size
C. Array
D. None of theseANSWER: A
The initial size of segment will be_______.
A. 1
B. 0
C. 2
D. 3
ANSWER: C
The removal of a segment with its details are called________.
A. Alter the segments
B. Deletion of segments
C. Closing the segment
D. None of these
ANSWER: B
Deletion of any segment is much________ than creation of any new segment.
A. Easier
B. Difficult
C. Higher
D. None of these
ANSWER:
B
When a display file is divided into number of subparts then each part is called as____.
A. Segment
B. Page
C. Image
D. Structure
ANSWER: A
A segment is a __________.
A. Small part of the whole scene
B. The complete scene
C. The collection of all pictures of the scene
D. None of these
ANSWER: A
Segments are called as structures in ____________ System.
A. GKSB. PHIGS
C. Core
D. CGM
ANSWER: C
Which of the following attribute of the segment is used to make changes in image?
A. Visibility
B. Segment name
C. Image Transformation
D. Segment Size
ANSWER:
D
Which of the following is not applied on segment?
A. Delete
B. Create
C. Close
D. Search
ANSWER: D
Which of the following operation is valid on Segment?
A. Copy
B. Search
C. Rename
D. Update
ANSWER: C
_______ attribute of segment is used to uniquely identify a particular segment.
A. Segment Start
B. Segment Name
C. Segment Size
D. Visibility
ANSWER: B
We can not have more than one segment open at a time. Statement true or false
A. TRUE
B. FALSE
C. Sometimes
D. None of theseANSWER: A
The segment name is must be unique. State true or false.
A. TRUE
B. FALSE
C. Sometimes
D. None of these
ANSWER: A
For creation of new segment, we have to write ___________.
A. Seg_Start [Seg_Name]=Next free location in display file
B. Seg_Start [Seg_Name]= Current location in display file
C. Seg_Start [Seg_Start]=Next free location in display file
D. Seg_Start [Seg_Start]=Current location in display file
ANSWER: A
The default value of Visibility attribute is ______.
A. OFF
B. ON
C. 0
D. 1
ANSWER: C
Segment Name always start from_________.
A. 0
B. 1
C. -1
D) None of these
ANSWER: C
To delete a particular segment________.
A. Set Visibility attribute of that segment as OFF.
B. Shift all next segments up and overlap the segment to be deleted.
C. Make the size of the segment to be deleted as zero in segment table and update the segment start attribute of next
segment.
D. Both B & C
ANSWER: D
To delete all the segments simultaneusly_______.A. Set size of all segments to zero
B. Set visibility attribute of all segment as OFF
C. Set segment start of all the segment to one
D. Both A & C
ANSWER: A
After deleting a particular segment, .................. attribute of all next segments needs modification.
A. Segment Size
B. Segment start
C. Segment name
D. Visibility
ANSWER: C
After deleting a particular segment, the segment start attribute of all next segment become_________.
A. Segment start of a particular segment - size of segment to be deleted
B. Segment Start of particular segment - Size of segment start of segment to be deleted.
C. Segment start of particular segment - size of next segment
D. None of these
ANSWER: A
The segment is opened if_______.
A. The segment name is not in sorted order
B. More than two segments are not having same segment name
C. Segment name is starting from one
D. None of these
ANSWER: D
Which of the following statement says segment is invalid?
A. if the size of segment is zero.
B. If the segment name is zero
C. if two segment starts from same location.
D. None of these
ANSWER: C
Double Buffering concept in segments is nothing but_______.
A. maintaing two temporary buffers
B. Maintating two images
C. Modifying the existing imageD. None of these
ANSWER: C
Segment Renaming means_____.
A. copying old segment name to new segment
B. Assigning new segment name to existing segment.
C. Assigning same name for two segments
D. None of thes
ANSWER: B
It is necessary to organize the dispiay file in such away that it will be divided into several ______, which posses the
portion of overall picture.
A. Line
B. Pixel
C. Segment
D. Curves
ANSWER:
C
Which is not attribute associated with segment?
A. Segment no
B. Segment start
C. Segment size
D. Length
ANSWER: D
This attribute/field additionaliy used in segment linked list___.
A. Colour
B. Visibility
C. Scalex
D. Link
ANSWER: A
Which process is used to keep replication of original segment?
A. Create segment
B. Close segment
C. Rename segment
D. Delete segment
ANSWER: D
Very Nice
ReplyDeleteIf the resultant object is given along with the set of transformations applied on it, then to find the original object we have to use___________.
ReplyDelete1 point
Normal transformation
Inverse transformation
Reverse transformation
Affine transformation
Y
Delete______________ allows the user to view the objects from different angles.
ReplyDelete1 point
(A) Rotation
(B) Translation
(C) Reflection
(D) Skewing
Rotation
DeleteThe window opened on the raster graphics screen in which the image will be displayed is called _____________
ReplyDelete1
World co-ordinate system
2
Screen co-ordinate system
3
World window
4
Interface window
World coordinate system
ReplyDeleteNice mcq
ReplyDeleteSuperb MCQ and thx to send google 🙏
ReplyDelete4. Rotate a triangle at A(0,0), B(6,0), C(3,3) by 20 about
ReplyDeleteorigin in anticlock wise directions
What is an answer of this ?
Question: There is a line L with 2 point form :
ReplyDeleteP(1,2,3), Q(-1,0,2)
1. What will be the line in two point form after Tx transformation.
1. What will be the length of the line after Ty transformation on the previous line found after step1.
please solve this question.
Which of the following statement is not correct with respect to homogeneous coordinates?
ReplyDeleteIt is used to combine transformations
Each point is represented as (xw, yw, w)
It is used for representing translation in matrix form
Homogeneous coordinates are represented in 2*2 matrix form
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