First slide

Prism

Question

If the angle of prism is 60° and the angle of minimum deviation is 40°, the angle of refraction will be

Moderate

A

30°
B

60°
C

100°
D

120°

Solution

In minimum deviation condition
$r = \frac{A}{2} = \frac{60}{2} = 30^{\circ}$

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