Question

For an isosceles prism of angle and refractive index , it is found that the angle of minimum deviation . Which of the following option(s) is/are correct? 

This question has multiple correct options
A

At minimum deviation, the incident angle and the refracting angle at the first refracting surface are related by

B

For this prism the refractive index and the angle of prism A are related as

C

For this prism, the emergent ray at the second surface will be tangential to the surface when the angle of incidence at the first surface is

D

For the angle of incidence , the ray inside the prism is parallel to the base of the prism

Hard
JEE Advanced
Solution
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Correct options are A) , C) and D)


We know for minimum deviation, ( : angle of minimum deviation)
Given
Hence
Now, for minimum deviation condition
Hence


=


Emergence =
Also
 
But
=

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