Question

For reflection from air to glass, the value of incident angle for which the reflected light is totally polarised (refractive index = n):
(a) \(\tan ^{-1}\left(\frac{1}{n}\right)\)
(b) \(\sin ^{-1}\left(\frac{1}{n}\right)\)
(c) sin^-1(n)
(d) tan^-1(n)

Answer 1

(d) tan^-1(n)
From Brewster’s law
n = tan i_p ⇒ tan^-1(n)