Unpolarised light is incident from air on a plane surface of a meterial of refractive index `'mu'`. At a particular angle of incidence `'I'`, it is found that the reflected and refracted rays are perpendicular to each other.
Which of the following options is correct for this situation?

Options

A. (a) `i=tan^-1(1/mu)`
B. (b) Refracted light is polarized with its electric vector parallel to the plane of incidence
C. (c) `i=sin^-1(1/mu)`
D. (d) Refracted light is polarized with its electric vector perpendicular to the plane of incidence

Answer

D

Explanation