Question

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

• A. $90^{\circ}+\phi$
• B. $\sin ^{-1}(\mu \cos \phi)$
• C. $90^{\circ}$
• D. $90^{\circ}-\sin ^{-1}(\sin \phi / \mu)$

Answer 1

Answer: (C)

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