Unpolarised light is incident from air on a plane surface of a material 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(1/mu)`
B. Reflected light is polarised with its electric vector perpendicular to the plane of incidence
C. Reflected light is polarised with its electric vector parallel to the plane of incidence
D. `i=tan^-1(1/mu)`

Answer

B