Optics Question 827

Question: A equilateral prism is made of a transparent material of refractive index $ \sqrt{2} $ . A ray of light AB is incident at $ 45{}^\circ $ as shown. The net deviation in the path of ray when it comes out of prism is

Options:

A) $ 135{}^\circ $

B) $ 120{}^\circ $

C) $ 30{}^\circ $

D) $ 150{}^\circ $

Show Answer

Answer:

Correct Answer: D

Solution:

[d] $ \delta =( 45{}^\circ -30{}^\circ )+( 180{}^\circ -60{}^\circ )+( 45{}^\circ -30{}^\circ ) $

$ =150{}^\circ $ Clockwise.



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