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BITSAT2021PhysicsWave OpticsActual

Consider the optical system shown in Fig. The point source of light S is having wavelength equal to . The light is reaching screen only after reflection. For point P to besecond maxima, the value of would be ( D >>d and d>> )

Options

  1. A12 d² D
  2. B6 d² D
  3. C3 d² D
  4. D24 d² D

Correct answer

A. 12 d² D

Step-by-step solution

At P , x= (8 d) 3 d D For 2 nd maxima, x=2 array l 24 d² D =2 = 12 d² D array

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