A ray of light is incident on the surface of a glass plate at an angle of incidence equal to Brewster's angle `phi`. If `mu` represents the refractive index of glass with respect to air, then the angle between reflected and refracted rays is

Options

A. (a) `90^@+phi`
B. (b) `sin^-1(mu cos phi)`
C. (c) `90^@`
D. (d) `90^@-sin^-1(sinphi//mu)`

Answer

C

Explanation

At polarizing angle, the reflected and refracted rays are mutually perpendicular to each other.