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MHT CET202122 Sep 2021Morning ShiftPhysicsWave OpticsActual

A single slit diffraction pattern is formed with white light. For what wavelength of light, the 3^ rd secondary maximum in diffraction pattern coincides with the 2^ nd secondary maximum in the pattern of red light of wavelength 6000 Å ?

Options

  1. A4300 Å
  2. B3500 Å
  3. C4000 Å
  4. D5000 Å

Correct answer

A. 4300 Å

Step-by-step solution

aligned & Distance of nth maximum y _ n = ( n + 1 2 ) D a & y ₂= (2+ 1 2 ) ₁ D a and y ₃= (3+ 1 2 ) ₂ D a & 2.5 ₁=3.5 ₂ & 2.5 6000=3.5 ₂ & ₂= 2.5 6000 3.5 4300 A aligned

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