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MHT CET202121 Sep 2021Morning ShiftPhysicsRay OpticsActual

A ray of light is incident at an angle ' i ' on one face of thin prism. The ray emerges normally from the other face. Refractive index of the glass prism is ' n ' and angle of prism is ' A '. The value of ' i ' is

Options

  1. AAn
  2. BAn ^2
  3. CA n
  4. DA n ^2

Correct answer

A. An

Step-by-step solution

From the figure, A=r n = i r = i A For small angles, n = i A i = An

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