Computer Graphics MCQs with Answers
Practice important Computer Graphics MCQs with answers and explanations.
Chapter: 28
Q921:
A plane in 3D graphics is analogous to a _______ in 2D graphics.
A. Line
B. Circle
C. Pixel
D. Square
Correct Answer:
A
Chapter: 28
Q922:
A plane is defined by a normal and a _______ value.
A. Color
B. Distance (d)
C. Angle
D. Weight
Correct Answer:
B
Chapter: 28
Q923:
If the normal points away from the origin, d is _______.
A. Positive
B. Zero
C. Negative
D. Undefined
Correct Answer:
C
Chapter: 28
Q924:
If the plane passes through the origin, the value of d is _______.
A. Positive
B. Negative
C. Zero
D. Infinite
Correct Answer:
C
Chapter: 28
Q925:
A normal vector to a plane is _______ to every point on the plane.
A. Parallel
B. Perpendicular
C. Diagonal
D. Undefined
Correct Answer:
B
Chapter: 28
Q926:
Which operation is used to find the normal of a plane from three points?
A. Dot product
B. Cross product
C. Sum
D. Scalar multiplication
Correct Answer:
B
Chapter: 28
Q927:
Back-face culling is used for _______.
A. Making objects larger
B. Removing invisible surfaces
C. Drawing reflections
D. Adding shadows
Correct Answer:
B
Chapter: 28
Q928:
Back-face culling can be determined using the _______ between camera and triangle plane.
A. Addition
B. Dot product
C. Subtraction
D. Multiplication
Correct Answer:
B
Chapter: 28
Q929:
In triangle drawing, the orientation should be _______ for correct back-face culling.
A. Clockwise
B. Random
C. Counter-clockwise
D. Vertical
Correct Answer:
A
Chapter: 28
Q930:
Perspective projection gives a more _______ view of the scene compared to parallel projection.
A. Distorted
B. Compressed
C. Realistic
D. Blurred
Correct Answer:
C
Chapter: 28
Q931:
In triangle fans, after the first triangle, each new triangle uses _______ points.
A. 2
B. 3
C. 4
D. 5
Correct Answer:
B
Chapter: 28
Q932:
A plane’s normal vector <a,b,c> should ideally be _______ length.
A. Infinite
B. Double
C. Unit
D. Zero
Correct Answer:
C
Chapter: 28
Q933:
The implicit equation of a plane in 3D is satisfied by _______ points lying in the plane.
A. All
B. Some
C. Few
D. Random
Correct Answer:
A
Chapter: 28
Q934:
Constructing a plane requires how many points?
A. 2
B. 3
C. 4
D. 5
Correct Answer:
B
Chapter: 28
Q935:
What is the visual effect if the back-face of triangles is not culled?
A. Scene becomes smoother
B. Hidden faces are drawn
C. Textures improve
D. Scene becomes faster
Correct Answer:
B
Chapter: 28
Q936:
Perspective projection requires defining a _______ factor.
A. Scaling
B. Shrinking
C. Coloring
D. Transparency
Correct Answer:
A
Chapter: 28
Q937:
A plane in 3D is infinitely _______.
A. Large and thick
B. Small and thick
C. Large and thin
D. Small and thin
Correct Answer:
C
Chapter: 28
Q938:
In screen coordinates, (0,0) is typically at the _______ of the screen.
A. Bottom right
B. Top left
C. Center
D. Bottom left
Correct Answer:
B
Chapter: 28
Q939:
Which method ensures correct triangle visibility based on viewpoint?
A. Color shading
B. Back-face culling
C. Texture mapping
D. Scaling
Correct Answer:
B
Chapter: 28
Q940:
When creating a triangle fan, the first triangle is made with how many elements?
A. 2
B. 3
C. 4
D. 5
Correct Answer:
B