Computer Graphics NPTEL Assignment 4 Answers
Are you looking for Computer Graphics Nptel Week 2 Assignment Answers ? All weeks solutions of this Swayam course are available here.
Table of Contents
Computer Graphics NPTEL Assignment 4 Answers (July-Dec 2025)
Question 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
Question 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
Question 3. Lighting model computes color in terms of ________ values.
a) Power
b) Complexity
c) Intensity
d) Voxel
Question 4. Incident light tends to reflect in all directions from a rough or grainy surface. This is called
a) Specular reflection
b) Diffuse reflection
Question 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
Question 6. We can perceive absolute difference in intensity values.
a) True
b) False
Question 7. In graphics, how many light source types are generally considered? (answer in number)
Question 8. In the simple lighting model, surfaces are considered to be “ideal diffuse reflectors”.
a) True
b) False
Question 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
Question 10. In the simple lighting model, we assume presence of a single ambient light source fully illuminating all the surfaces.
a) True
b) False
Computer Graphics NPTEL Assignment 4 Answers (July-Dec 2024)
Link of course: Click Here
Q1) 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: a. True
Q2) Lighting model computes color in terms of ________ values.
a. Power
b. Complexity
c. Intensity
d. Voxel
Answer: b. Complexity
These are the solution of Computer Graphics NPTEL Assignment 4 Answers
Q3) 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: a. Intensity Attenuation
Q4) 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: a. True
Q5) In graphics, how many light source types are generally considered?
Answer: 3
These are the solution of Computer Graphics NPTEL Assignment 4 Answers
Q6) Lighting and shading represent two different ways of computing colors at a point.
a. True
b. False
Answer: a. True
Q7) Flat shading is more realistic coloring than gouraud shading (at the expense of increased computation).
a. True
b. False
Answer: b. False
Q8) In graphics there are typically three types of light sources : Point light source, Directional source and _______ source.
a. Ambient
b. Simple
c. Albedo
Answer: a. Ambient
These are the solution of Computer Graphics NPTEL Assignment 4 Answers
Q9) models work at the pixel-level, after the scene is mapped to the screen.
a. Lighting
b. Shading
Answer: b. Shading
Q10) We cannot perceive absolute difference in intensity value
a. True
b. False
Answer: a. True
These are the solution of Computer Graphics NPTEL Assignment 4 Answers
All Weeks of Computer Graphics: https://progies.in/answers/nptel/computer-graphics
More NPTEL solutions: https://progies.in/answers/nptel
