Refractive index of the material of the prism is 
and its refracting angle is 
one of the refracting surface of the prism is made silvered. A beam of monochromatic light entering the prism from the other face will retrace it's path after reflection from the silvered surface. If its angle of incidence on the prism is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
We have, 
Applying Snell's law, we get
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