Computer Graphics Week 4 NPTEL Assignment Answers 2025
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✅ Subject: Computer Graphics
📅 Week: 4
🎯 Session: NPTEL 2025 July-October
🔗 Course Link: Click Here
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NPTEL Computer Graphics Week 4 Assignment Answers 2025
1. One of the primary purposes of assigning colors to the objects in a scene is to perceive depth, which helps in creating impression of 3D.
a. True
b. False
Answer : See Answers
2. Match the following
I. Transport of light energy A. Lighting
II. Light get reflected from surrounding surface B. Illumination
III. Process of computing the luminous intensity C. Ambient light
a. I-A, II-B, II-C
b. I-B, II-C, III-A
c. I-C, II-B, III-A
d. I-A, II-C, III-B
Answer :
3. Lighting model computes color in terms of ______________ values.
a. Power
b. Complexity
c. Intensity
d. Voxel
Answer :
4. Incident light tends to reflect in all directions from a rough or grainy surface. This is called
a. Specular reflection
b. Diffuse reflection
Answer :
5. 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 :
6. We can perceive absolute difference in intensity values.
a. True
b. False
Answer : See Answers
7. In graphics, how many light source types are generally considered? (answer in number)
Answer :
8. In the simple lighting model, surfaces are considered to be “ideal diffuse reflectors”.
a. True
b. False
Answer :
9. 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 :
10. In the simple lighting model, we assume presence of a single ambient light source fully illuminating all the surfaces.
a. True
b. False
Answer : See Answers
