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

Answer

C

Explanation

`tan i=mu` (Brewstar Law)
At angle of polarization, reflected light is polarized with its electric vector perpendicular to the plane of incidence.