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If minimum deviation =30^ , then speed of light in shown prism will be

Options

  1. A3 2 10^8 ~m / s
  2. B1 2 10^8 ~m / s
  3. C2 3 10^8 ~m / s
  4. D2 3 10^8 ~m / s

Correct answer

A. 3 2 10^8 ~m / s

Step-by-step solution

Given, A =60^ , _ m =30^ According to prism formula, = ( A+ _ m 2 ) ( A 2 ) or = ( 60^ +30^ 2 ) 60^ 2 = 45^ 30^ or = 2 aligned & = Speed of light in air (c) Speed of light in prism (v) v & = c = 3 10^8 2 = 3 2 10^8 ~m / s aligned

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