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For a material medium, the values of refractive index for violet and red colours are given as n v = 1.56 and n r = 1.44 . The dispersive power of a prism made out of this material is

Options

  1. A0.06
  2. B0.24
  3. C0.03
  4. Dnone of these

Correct answer

B. 0.24

Step-by-step solution

Dispersive power of a prism is given as, ω = n v − n r ( n v + n r 2 ) − 1 = 1.56 − 1.44 ( 1.56 + 1.44 2 ) − 1 = 0.24

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