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MHT CET202013 Oct 2020Evening ShiftPhysicsWave OpticsActual

distance between slit and eyepiece. When the distance between two virtual sources is changed from d _ A to d _ B , then the fringe width is changed from Z _ A to Z _ B . The ratio Z _ A to Z _ B is

Options

  1. A( d _ A d _ B )²
  2. B( d _ A d _ B )
  3. C( d _ B d _ A )
  4. Dd _ B d _ A

Correct answer

C. ( d _ B d _ A )

Step-by-step solution

Fringe width is given by z= D d z _ A Z _ B = d _ B d _ A

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