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If refractive index of a material of equilateral prism is 3 , then angle of minimum deviation of the prism is

Options

  1. A30^
  2. B45^
  3. C60^
  4. D75^

Correct answer

C. 60^

Step-by-step solution

aligned & = ( A+ _m 2 ) A 2 3 & = ( 60^ + _m 2 ) 60^ 2 3 2 = [30^ + _m 2 ] _m & =60^ aligned

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