In an equilateral prism, the light ray is refracted such that angle of incidence is equal to angle of emergence. If the angle of emergence is 3/4 times of angle of prism, then angle of deviation will be

Options :
  1. 40 degree
  2. 39 degree
  3. 20 degree
  4. 30 degree
Answer and Explanation :-

Answer: Option 4

Explanation:

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