Question 162 of 191

When an unpolarized light falls at a particular angle on a glass plate (placed in air), it is observed that the reflected beam is linearly polarized. The angle of refracted beam with respect to the normal is $\_\_\_\_$.
$\left(\tan ^{-1}(1.52)=57.7^{\circ}\right.$, refractive indices of air and glass are 1.00 and 1.52, respectively.)

A$39.6^{\circ}$B$32.3^{\circ}$C$36.3^{\circ}$D$42.6^{\circ}$

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Answer: (B) $32.3^{\circ}$

$\tan i = \dfrac{\mu_2}{\mu_1} = \dfrac{\mu_g}{\mu_a}$
$\tan i = 1.52$
$i = 57.7°$
$r = 90° - i$
$r = 32.3°$