Question

At what angle of incidence is light completely polarized after reflection from a surface of water? What is the corresponding angle of refraction? Assume that light is incident from air. The n of water=1.33.

Answer 1

$$\theta_i=\theta_B=\tan^{-1}\frac{n_2}{n_1}$$

$$=\tan^{-1}\frac{1.33}{1.00}=53^\circ$$

$$\theta_r=90^\circ-\theta_i=90^\circ-53^\circ=37^\circ$$