A light ray is incident on a transparent sphere of refractive index at an angle of…
PHYSICS · Single correct · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments
Problem
A light ray is incident on a transparent sphere of refractive index 2 at an angle of incidence 45∘. What is the deviation of a tiny fraction of the ray which enters the sphere, undergoes two internal reflections, and then refracts out into air?
(1) 270∘
(2) 240∘
(3) 120∘
(4) 180∘