Q142 / 160 · AP EAMCET 2018 (24 Apr Shift 2) · Physics

For a prism, the angle of the prism is $60^{\circ}$ and the refractive index is $\sqrt{\frac{7}{3}}$. The minimum possible angle of incidence so that the light ray is refracted from the second surface is

A
$15^{\circ}$
B
$25^{\circ}$
Correct answer
C
$30^{\circ}$
D
$35^{\circ}$

Hence, the correct answer is option: 'C'.

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