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Question

Physics Question on Ray optics and optical instruments

Find the value of the angle of emergence from the prism. Refractive index of the glass is 3\sqrt{3}.

A

60∘60^{\circ}

B

30∘30^{\circ}

C

45∘45^{\circ}

D

90∘90^{\circ}

Answer

60∘60^{\circ}

Explanation

Solution

sin⁡esin⁡30∘=3\frac{\sin e}{\sin 30^{\circ}}=\sqrt{3}
⇒sin⁡e=32\Rightarrow \sin e=\frac{\sqrt{3}}{2}
⇒e=60∘\Rightarrow e=60^{\circ}