Question

The angle of incidence at which reflected light in totally polarized for reflection from air to glass (refractive index n), is

(a) sin^–1(n) 

(b) sin^–1(1/n)

(c) tan^–1(1/n) 

(d) tan^–1(n).

Answer 1

(d) : According to Brewster's law of polarization, n = tani_P where i_p is angle of incidence
Therefore, i_p = tan^–1(n).