A ray of light is incident from a denser to a rarer medium

PHYSICS · Single correct · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments

Problem

A ray of light is incident from a denser to a rarer medium. The critical angle for total internal reflection is

\theta_{ic}

and Brewster's angle of incidence is

\theta_{iB}

, such that

\sin \theta_{ic} / \sin \theta_{iB} = \eta = 1.28

. The relative refractive index of the two media is: (1) 0.2 (2) 0.4 (3) 0.8 (4) 0.9