NPTEL Computer Graphics week 4 Assignment Answers 2023:- All the Answers provided below to help the students as a reference, You must submit your assignment at your own knowledge.
NPTEL Computer Graphics Week 4 Assignment Answers 2023
1. What is the process of computing the luminous intensity at a point known as?
A) Illumination
B) Lighting
C) Direct coloring
D) Indirect coloring
Answer :-
2. In graphics there are typically three types of light sources: Point light source, Directional source and ______ source.
A) Spotlight
B) Ambient
C) Simple
D) Albedo
Answer :-
4. Reflection from a point can occur either of two ways: Diffuse reflection and _ ___.
A) Direct reflection
B) Specular reflection
C) Indirect reflection
D) Ambient reflection
Answer :-
4. _______ models work at the pixel-level, after the scene is mapped to the screen.
A) Lighting
B) Shading
Answer :-
5. In the simple lighting model, we assume presence of a single ambient light source fully illuminating all the surfaces.
A) True
B). False
Answer :-
6. Color of a surface point depends on the properties of the light source as well as the surface containing the point.
A) True
B). False
Answer :-
7. In lighting model, to avoid indistinguishable overlapping of surfaces with different distances we use
A) Intensity Attenuation
B) Color Attenuation
C) Intensity Reflection
D) Color Reflection
Answer :-
8. Incident light tends to reflect in all directions from a rough or grainy surface. This is called
A) Specular reflection
B) Diffuse reflection
Answer :-
9. Gouraud shading limitations can be overcome with a more accurate shading model, known as the ______.
A) Phong shading
B) Flat shading
C) Iterative shading
Answer :-
10. ______ attenuation factor accounts for the effect of diminishing light intensity over distance.
A) Angular
B) Radial
Answer :-
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