A narrow beam of light of intensity Io falls on a plane-parallel glass plate (Fig. 5.34) at

Question:

A narrow beam of light of intensity Io falls on a plane-parallel glass plate (Fig. 5.34) at the Brewster angle. Using the Fresnel equations, find:
(a) The intensity of the transmitted beam Io if the oscillation plane of the incident plane-polarized light is perpendicular to the incidence plane;
(b) The degree of polarization of the transmitted light if the light falling on the plate is natural.

Io.