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Minimum Deviation

Two parallel ...

Question

Two parallel light rays are incident at one surface of a prism of refractive index 1.5 as shown in figure. The angle between the emergent rays is nearly

A

19⁰

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B

37⁰

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C

60⁰

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D

90⁰

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Solution

The correct option is B 37⁰
Following arguments lead us easily to the right choice.

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Minimum Deviation

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