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A light ray is incident on the surface of a sphere of refractive index n at an angle of incidence . The ray partially refracts into the sphere with angle of refraction and then partly reflects from the back surface. The reflected ray then emerges out of the sphere after a partial refraction. The total angle of deviation of the emergent ray with respect to the incident ray is . Match the quantities mentioned in List-I with their values in List-II and choose the correct option. List-I List-II (P) If n = 2 and = 180°, then all the possible values of will be (1) 30° and 0° (Q) If n = 3 and = 180°, then all the possible values of will be (2) 60° and 0° (R) If n = 3 and = 180°, then all the possible values of will be (3) 45° and 0° (S) If n = 2 and 0 = 45°, then all the possible values of will be (4) 150° (5) 0°
- P 5; Q 2; R 1; S 4
- P 5; Q 1; R 2; S 4
- P 3; Q 2; R 1; S 4
- P 3; Q 1; R 2; S 5
Correct answer: P 5; Q 2; R 1; S 4
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