A parallel beam of light is incident from air at an angle a on the side PQ of a right angled

A parallel beam of light is incident from air at an angle a on the side PQ of a right angled triangular prism of refractive index n = √2 . Light undergoes total internal reflection in the prism at the face PR when ∝ has a minimum value of 45°. The angle q of the prism is :
1

(A) 15°
(B) 22.5°
(C) 30°
(D) 45°

Anurag Mishra Professor Asked on 23rd May 2016 in Physics.
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  • 1 Answer(s)

    Answer: (a) 15 degree 

    Anurag Mishra Professor Answered on 24th May 2016.
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