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Question: Answered & Verified by Expert
An interference pattern was made by using red light. If the red light changes with blue light, the fringes will become
PhysicsWave OpticsJEE Main
Options:
  • A Wider
  • B Narrower
  • C Fainter
  • D Brighter
Solution:
2758 Upvotes Verified Answer
The correct answer is: Narrower
$\beta=\frac{\lambda D}{d} \Rightarrow \beta \propto \lambda$

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