Question

An unpolarised light is incident on a glass plate at polarizing angle 57∘ with the normal on a glass plane. The reflected light will be

Answer 1

The reflected light will be - 3811430. ... on a glass plate at polarizing angle 57∘ with the normal on a glass plane.

Answer 2

The correct answer to the question is that the reflected light will be plane polarized.

EXPLANATION:

As per the question, the unpolarised light is incident on a glass plate. The electric field vector of unpolarised light has two components which are called as  parallel and perpendicular components, and they vibrate at different orthogonal planes .

The angle of incidence of the light corresponds to the polarising angle.

The polarising angle is given as 57 degree.

As the light is falling at Brewster's angle, so the reflected light will contain only perpendicular component of the unpolarised light . Hence, the electric field vector of light will vibrate in a single plane only.

Hence, the reflected light is plane polarised.