Unpolarised light is incident from air on a plane surface of a material of refractive index μ. 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 ?
Reflected light is polarised with its electric vector parallel to the plane of incidence
Reflected light is polarised with its electric vector perpendicular to the plane of incidence