Question

The polarizing angle of glass is $57^\circ$. A ray of light which is incident at this angle will have an angle of refraction as

• A. 25$^\circ$
• B. 33$^\circ$
• C. 43$^\circ$
• D. 38$^\circ$

Answer 1

Answer: (B)

33$^\circ$

Answer 2

Given, $\theta_{P}=57^{\circ}$
According to Brewster's law, we have
$\theta_{P}+r =90^{\circ}$
$\Rightarrow r=90^{\circ}-\theta_{P}$
$r =90^{\circ}-57$
Angle of refraction, $I=33^{\circ}$