MCQ
Under minimum deviation condition in a prism, if a ray is incident at an angle $30,$ the angle between the emergent ray and the second refracting surface of the prism is
- A$0^{\circ}$
- B$30^{\circ}$
- C$45^{\circ}$
- ✓$60^{\circ}$
✓
Answer
Correct option: D.
$60^{\circ}$
In minimum deviation $i=e=30^{\circ}$, so angle between emergent ray and second refracting surface is $90^{\circ}-30^{\circ}=60^{\circ}$
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