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Question: Answered & Verified by Expert
If Young's double slit experiment is performed in water instead of air
PhysicsWave OpticsNEET
Options:
  • A The fringe width will decrease
  • B The fringe width will increase
  • C The fringe width will remain unchanged
  • D There will be no fringe
Solution:
1786 Upvotes Verified Answer
The correct answer is: The fringe width will decrease
As we know

                β = D d λ        .....(i)

and         λ 1 μ             .....(ii)

From eqs. (i) and (ii),

               β λ 1 μ

  β 1 = β μ

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