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For the angle of minimum deviation of a prism to be equal to its refracting angle, the prism must be made of a material whose refractive index

Options

  1. Alies between 2 and 1
  2. Blies between 2 and 2
  3. Cis less than 1
  4. Dis greater than 2

Correct answer

B. lies between 2 and 2

Step-by-step solution

aligned & = ( A+ m 2 ) A / 2 & = ( A+A 2 ) A / 2 aligned In given situation value of A varies from 0 to 90^ . So, _ =2 90^ 2 = 2 and _ =2 0^ =2

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