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Question: Answered & Verified by Expert
In Young's double slit experiment, with a source of light having wavelength $6300 Å$, the first maxima will occur when the
PhysicsWave OpticsMHT CETMHT CET 2021 (20 Sep Shift 1)
Options:
  • A path difference is $9200 Å$
  • B phase difference is $\pi$ radian
  • C phase difference is $\frac{\pi}{2}$ radian
  • D path difference is $6300 Å$
Solution:
1697 Upvotes Verified Answer
The correct answer is: path difference is $6300 Å$
For maxima, path difference $=\mathrm{n} \lambda$
For first maximum, $\mathrm{n}=1$
$\therefore$ Path difference, $\lambda=6300 Å$

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