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MHT CET202123 Sep 2021Evening ShiftPhysicsWave OpticsActual

In YDSE, the distance of the slits from the screen is increased by 25 % and the separation between the slits is halved. If ' W ' represents the original fringe width, the new fringe width is

Options

  1. A2 ~W
  2. B2.5 ~W
  3. C4W
  4. D1.5 ~W

Correct answer

B. 2.5 ~W

Step-by-step solution

aligned & E = D d & W ₂ ~W ₁ = D ₂ D ₁ d ₁ ~d ₂ & D ₂=1.25 D ₁ and d ₂= d ₁ 2 & W ₂ ~W ₁ =1.25 2=2.5 & W ₂=2.5 ~W aligned

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