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Discussion

When a ray of light is refracted by a prism such that the angle of deviation is minimum then

  • A.The angle of emergence is equal to the angle of incidence
  • B.The angle of emergence is greater than the angle of incidence
  • C.The angle of emergence is smaller than the angle of incidence
  • D.The sum of the angle of incidence and the angle of emergence is equal to 90 degrees

Answer: A

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