Question

The refractive index of a medium is $\sqrt{3}$. If the unpolarized light is incident on it at the polarizing angle of the medium, the angle of refraction is:

• A. ${60}^{\circ }$
• B. ${45}^{\circ }$
• C. ${30}^{\circ }$
• D. $0^{\circ }$

Answer 1

Answer: (C)

${30}^{\circ }$

Given The refractive index of the medium is $\mu =\sqrt{3}$

The relation between the polarizing angle and the refractive index of the medium is given as:

$\tan i_p=\sqrt{3}$

$i_p={\tan }^{-1}\left(\sqrt{3}\right)={60}^{\circ }$

The angle of refraction can be obtained as:

$r=90-i_p$

$=90-60={30}^{\circ }$