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Question: Answered & Verified by Expert
In a wave, the path difference corresponding to a phase difference of $\varphi$ is
PhysicsWave OpticsJEE Main
Options:
  • A $\frac{\pi}{2 \lambda} \phi$
  • B $\frac{\pi}{\lambda} \phi$
  • C $\frac{\lambda}{2 \pi} \phi$
  • D $\frac{\lambda}{\pi} \phi$
Solution:
2229 Upvotes Verified Answer
The correct answer is: $\frac{\lambda}{2 \pi} \phi$
For $2 \pi$ phase difference $\rightarrow$ Path difference is $\lambda$
$\therefore$ For $\varphi$ phase difference $\rightarrow$ Path difference is $\frac{\lambda}{2 \pi} \times \phi$

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