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

\sqrt{2}

at an angle of incidence

45^\circ

. What is the deviation of a tiny fraction of the ray that enters the sphere, undergoes two internal reflections, and then refracts out into air? (1)

270^\circ

(2)

240^\circ

(3)

120^\circ

(4)

180^\circ