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The refractive index of glass is 1.520 for red light and 1.525 for blue light. Let D₁ and D₂ be angles of minimum deviation for red and blue light respectively in a prism of this glass. then,

Options

  1. AD₁ D₂
  2. BD₁=D₂
  3. CD₁ can be less than or greater than D₂ depending upon the angle of prism
  4. DD₁ D₂

Correct answer

A. D₁ D₂

Step-by-step solution

D=( -1) A For blue light is greater than that for red light, so D₂ D₁ .

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