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Question: The critical angle of a prism is 36<sup>0</sup>. The maximum angle of prism for which an emergent ra...

The critical angle of a prism is 360. The maximum angle of prism for which an emergent ray is possible is-

A

720

B

540

C

360

D

160

Answer

720

Explanation

Solution

For an emergent ray, A £ 2 ic

\ A £ 2 × 360

\ A £ 720