Ray Optics and Optical Instruments

A light ray is incident on the surface of a sphere of refractive index n at an angle of incidence 0. The ray partially refracts into the sphere with angle of refraction 0 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.

1. P → 5; Q → 2; R → 1; S → 4
2. P → 5; Q → 1; R → 2; S → 4
3. P → 3; Q → 2; R → 1; S → 4
4. P → 3; Q → 1; R → 2; S → 5