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Question: Answered & Verified by Expert
If the screen is moved away from the plane of the slits in a Young's double slit experiment, then the:
PhysicsWave OpticsNEETNEET 2022 (Phase 2)
Options:
  • A angular separation of the fringes increases
  • B angular separation of the fringes decreases
  • C linear separation of the fringes increases
  • D linear separation of the fringes decreases
Solution:
2830 Upvotes Verified Answer
The correct answer is: linear separation of the fringes increases
As per YDSE, $x=\frac{\lambda \mathrm{D}}{d}$,
(where, symbols have their usual meanings)
If the screen is moving away from the slits then D increases, and hence the fringe width $(x)$ increases.

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