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The figures represent three cases of a r...

The figures represent three cases of a ray passing through a prism of angle A. The case corresponding to minimum deviation is

A

`1`

B

`2`

C

`3`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
B
When deviation is minimum, refracted ray inside the prism is parallel to base of prism. Therefore, `(2)` is correct.
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