CS602 Final Term Quiz 3 July 2023 by Miss Mehwish

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MCQ 1: The Phong reflection model simplifies light-matter interactions essentially into 4 vectors and a number of constants. Which piece of the Phong model is responsible for giving spheres their bright white spots?

a) Ambient b) Specular c) Ambient and Diffuse d) Diffuse

Correct option: b) Specular

MCQ 2: If we want any object to glow, we should use ________________ lights.

a) Diffuse b) Ambient c) Emissive d) Specular

Correct option: c) Emissive

MCQ 3: This is a simple example of line clipping: the display window is the canvas and also the default -- ------------------, thus all line segments inside the canvas are drawn.

a) Clipping Circle b) Clipping Polygon c) Clipping Rectangle d) Clipping Angle

Correct option: c) Clipping Rectangle

MCQ 4: Consider the following problem from lighting: A point (P1) is at (0, 0, 0) with normal equal to 1/(2*sqrt(2))*(sqrt(2), 2, sqrt(2)). The light is located at (0, 1, 0). The viewer is located at (1, 1,

Q1. . The specular and diffuse coefficients for the light are both (1, 1, 1), with the ambient portion as (.2, .2, .2). Complete the reflection vector.

1. 1
2. -1
3. 0

Correct option: c) 0

MCQ 5: The physical range of colours a device can display is called _____________________ of the device.

a) Sharpness b) Colouring c) Gamut d) Colouring with Sharpness

Correct option: c) Gamut

MCQ 6: Light is mostly reflected in the case of ___________ surfaces.

a) Nonconductor (like dielectrics) b) Conductor (like metals) c) Both conductor and nonconductor