Computer Graphics MCQs with Answers
Practice important Computer Graphics MCQs with answers and explanations.
Chapter: 12
Q401:
Homogeneous coordinates of (x, y) are represented as _______.
A. (x, y, 0)
B. (x, y, 1)
C. (x, y, x)
D. (x, y, y)
Correct Answer:
B
Chapter: 12
Q402:
Translation matrix in homogeneous coordinates is abbreviated as _______.
A. R(θ)
B. S(sx, sy)
C. T(tx, ty)
D. P(Tx, Ty)
Correct Answer:
C
Chapter: 12
Q403:
Scaling using homogeneous coordinates is abbreviated as _______.
A. S(sx, sy)
B. T(tx, ty)
C. R(θ)
D. P(x, y)
Correct Answer:
A
Chapter: 12
Q404:
Rotation using homogeneous coordinates is abbreviated as _______.
A. T(tx, ty)
B. R(θ)
C. S(sx, sy)
D. M(xh, yh)
Correct Answer:
B
Chapter: 12
Q405:
Matrix multiplication in transformations is _______.
A. Commutative
B. Associative
C. Both
D. None
Correct Answer:
B
Chapter: 12
Q406:
Successive translations are _______.
A. Additive
B. Subtractive
C. Multiplicative
D. Divisive
Correct Answer:
A
Chapter: 12
Q407:
Two successive rotations applied to a point are _______.
A. Subtractive
B. Additive
C. Multiplicative
D. Divisive
Correct Answer:
B
Chapter: 12
Q408:
Two successive scalings applied to a point are _______.
A. Subtractive
B. Additive
C. Multiplicative
D. Divisive
Correct Answer:
C
Chapter: 12
Q409:
The transformation for rotating an object about a pivot point involves _______ translations.
A. Two
B. Three
C. One
D. Four
Correct Answer:
A
Chapter: 12
Q410:
What is the correct sequence for rotating about a pivot point?
A. Rotate, Translate, Translate
B. Translate, Rotate, Translate
C. Translate, Translate, Rotate
D. Rotate, Rotate, Translate
Correct Answer:
B
Chapter: 12
Q411:
Scaling with respect to a fixed point involves moving the point to the _______.
A. Origin
B. Destination
C. Top right
D. Bottom left
Correct Answer:
A
Chapter: 12
Q412:
In composite transformations, the order of transformations _______ affects the final result.
A. Always
B. Never
C. Sometimes
D. Rarely
Correct Answer:
A
Chapter: 12
Q413:
In which case matrix multiplication is commutative?
A. Rotation and Scaling (Sx≠Sy)
B. Translation and Rotation
C. Rotation and Uniform Scaling (Sx=Sy)
D. Scaling and Translation
Correct Answer:
C
Chapter: 12
Q414:
Which of the following is NOT a basic transformation?
A. Translation
B. Rotation
C. Reflection
D. Scaling
Correct Answer:
C
Chapter: 12
Q415:
Homogeneous coordinate (3x3 matrix) allows performing transformations using only _______.
A. Addition
B. Subtraction
C. Multiplication
D. Division
Correct Answer:
C
Chapter: 12
Q416:
Scaling by factors sx=3 and sy=3, then again sx=3 and sy=3 results in overall scaling factor of _______.
A. 6
B. 9
C. 3
D. 12
Correct Answer:
B
Chapter: 12
Q417:
In a composite transformation, rsij elements represent _______ terms.
A. Scaling
B. Rotation
C. Translation
D. Rotation-scaling
Correct Answer:
D
Chapter: 12
Q418:
Final coordinates after transformation can be calculated by which formula?
A. x' = x + rsxx + trsx
B. y' = y + rsyx + trsy
C. x' = x.rsxx + y.rsxy + trsx
D. y' = y.rsyx + x.rsyy + trsy
Correct Answer:
C
Chapter: 12
Q419:
The process of combining multiple transformations into a single matrix is called _______.
A. Composition
B. Concatenation
C. Addition
D. Division
Correct Answer:
B
Chapter: 12
Q420:
The general transformation combining translation, rotation and scaling is written as _______.
A. T(tx,ty) + R(xc,yc,θ) + S(xc,yc,sx,sy)
B. T(tx,ty).R(xc,yc,θ).S(xc,yc,sx,sy)
C. S(xc,yc,sx,sy).T(tx,ty).R(xc,yc,θ)
D. R(xc,yc,θ).T(tx,ty).S(xc,yc,sx,sy)
Correct Answer:
B