First slide

Prism

Question

The angle of minimum deviation measured with a prism is 30° and the angle of prism is 60°. The refractive index of prism material is

Moderate

A

$\sqrt{2}$
B

2
C

$\frac{3}{2}$
D

$\frac{4}{3}$

Solution

$μ = \frac{\sin (\frac{A + δ_{m}}{2})}{\sin (A / 2)} = \frac{\sin 45^{\circ}}{\sin 30^{\circ}} = \sqrt{2}$

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