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JEE Main 201323 AprilOnline
Exam
JEE Main
Year
2013
Date
23 April
Mode
Online
Subject
Physics
Chapter
Wave Optics

JEE Main 2013 · 23 April · Online · Physics · Wave Optics

n identical waves each of intensity I_0 interfere with each other....

nn identical waves each of intensity I0I_0 interfere with each other. The ratio of maximum intensities if the interference is (i) coherent and (ii) incoherent is :

Options

  1. An2n^2
  2. B1n\frac{1}{n}
  3. C1n2\frac{1}{n^2}
  4. Dnn

Correct answer

D. nn

Step-by-step solution

\frac{\text{ (Maximum intensity) coherent interference }}{\text{ (Maximum intensity) coherent interference }} =\frac{\mathrm{n}^2\mathrm{I}_0}{\mathrm{nI}_0}=n\mathrm{n}
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