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Q.

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

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a

45°

b

30°

c

60°

d

0°

answer is D.

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Detailed Solution

In minimum deviation i=e=30∘ so angle between emergent ray and second refracting surface is 90∘−30∘=60∘

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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