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Concepts Of Physics MCQ Edition [Volume 1]PhysicsDispersion and Spectra

A specific material exhibits refractive indices of 1.56 , 1.60 , and 1.68 for red, yellow, and violet light, respectively. Evaluate the angular dispersion produced by a thin prism with an angle of 6^ constructed from this material.

Options

  1. A0.12^
  2. B3.60^
  3. C4.08^
  4. D0.72^

Correct answer

D. 0.72^

Step-by-step solution

The angular dispersion produced by a thin prism is given by the difference in the angles of deviation for violet and red light. The formula for angular dispersion is = ( _v - _r)A Given values are _v = 1.68 , _r = 1.56 , and A = 6^ Substituting the values into the formula: = (1.68 - 1.56) 6^ = 0.12 6^ = 0.72^

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