When unpolarized light is incident at an angle of 60° on a transparent medium from air. The reflected ray is completely polarized. The angle of refraction in the medium is
Options

Question

When unpolarized light is incident at an angle of 60° on a transparent medium from air. The reflected ray is completely polarized. The angle of refraction in the medium is

G1 Physics · Accepted Answer

By Brewster’s law, at complete polarization the reflected ray and refracted ray are perpendicular. Therefore, iₚ + r = 90° 60° + r = 90° r = 30°