Question

The beam of a natural light falls onto the surface of the glass plate that is situated

in the liquid. The angle between the incident light and the reflected light is φ. Find the

formula determining the index of refraction n₂ of the glass plate if the reflected light is

fully polarized and the index of refraction n₁ of the liquid is known.

Answer 1

$$\sin\phi=n_2/n_1,\\\space\\ n_2=n_1\sin\phi.$$