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JIPMER2004PhysicsRay Optics

A this glass prism ( =1.5) in the position of minimum deviation deviates the monochromatic light ray by 10^ , the refracting angle of prism is

Options

  1. A20^
  2. B10^
  3. C30^
  4. D45^

Correct answer

A. 20^

Step-by-step solution

Given : _m=10^ , =1.5 For a thin prism of minimum deviation _m=( -1) A 10^ =(1.5-1) A or A= 10 0.5 =20^

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