Question

A light ray is incident on a transparent medium of $\mu =$ 1.732 at the polarizing angle. The angle of refraction is :

• A. 60${}^{\circ }$
• B. 30${}^{\circ }$
• C. 45${}^{\circ }$
• D. 90${}^{\circ }$

Answer 1

The correct option is B 30${}^{\circ }$

Angle of incidence $=$ polarising angle
$tani=\mu$
$tani=1.732$
$i={60}^0$
From snell's law
$\frac{sini}{sin\gamma }=\mu$
$sin\gamma =\frac{sin{60}^0}{1.732}$
$\gamma ={30}^0$