### Computer Graphics (3150712) MCQs

Showing 1 to 10 out of 36 Questions
1.
In which type of visible-surface detection Algorithms visibility is decided point by point at each pixel position on the projection plane?
 (a) Object-Space methods (b) Image-Space methods (c) A and B both (d) None of these
2.
In the back-face detection algorithm, If V is along the positive Z direction than polygon is back face if ______. (V = vector in viewing direction from eye, C = Plane constant)
 (a) $C\ge 0$ (b) $C\le 0$ (c) $C\ge 1$ (d) $C\le 1$
3.
Which is true for back-face detection?
 (a) The back-face detection algorithm is always working well for all polyhedron (b) The back-face detection algorithm always works for a concave polyhedron (c) The back-face detection algorithm always works for a convex polyhedron (d) All of these
4.
Which of these is a visible surface detection algorithm?
 (a) Back-face detection (b) Back-face removal (c) Ray tracing (d) None of these
5.
In the depth buffer method which buffer is/are used?
 (a) Depth buffer (b) Refresh buffer (c) Frame buffer (d) A and B both
6.
Which surface algorithm is based on perspective depth?
 (a) Depth comparison (b) Z-buffer or depth-buffer algorithm (c) Subdivision method (d) Back-face removal
7.
When we see any object we see ______ light from that object.
 (a) Incident (b) Reflected (c) A and B both (d) None of these
8.
An object is illuminated when :
 (a) Directly exposed to a light source (b) Light is completely absent (c) Not directly exposed to light may also visible if a nearby object is illuminated (d) A and C both
9.
Sun on the earth can be considered as :
 (a) Point light source (b) Distributed light source (c) Line light source (d) Symmetric light source
10.
Tube light in a room can be considered as :
 (a) Point light source (b) Distributed light source (c) Line light source (d) Symmetric light source
Showing 1 to 10 out of 36 Questions