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MHT CET202210 Aug 2022Morning ShiftPhysicsWave OpticsActual

In a biprism experiment, the distance between the two sources is doubled and the distance between the slit and the eyepiece is also doubled. Then the width of the fringe is

Options

  1. Ahalved.
  2. Bunchanged.
  3. Creduced to ( 1 3 )^ r d
  4. Ddoubled.

Correct answer

B. unchanged.

Step-by-step solution

The fringe width under initial condition, slit width d and the distance between the slit and the eyepiece is D : X= D d The fringe width under new situation, slit width 2 d and the distance between the slit and the eyepiece is 2 D : aligned & X^ = (2 D) (2 d) & X=X^ aligned

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