Physics-
General
Easy
Question
A ray of monochromatic light is incident on one refracting face of a prism of angle 
. It passes through the prism and is incident on the other face at the critical angle. If the refractive index of the material of the prism is 
, the angle of incidence on the first face of the prism is
The correct answer is:
From figure
From Snell’s law At B
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