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Question: Answered & Verified by Expert
Intensities of the two waves of light are $I$ and $4 I$. The maximum intensity of the resultant wave after superposition is
PhysicsWave OpticsJEE Main
Options:
  • A $51$
  • B $91$
  • C 16 /
  • D $251$
Solution:
1913 Upvotes Verified Answer
The correct answer is: $91$
$I_{\max }=I_1+I_2+2 \sqrt{I_1 I_2}$
So, $I_{\max }=I+4 I+2 \sqrt{I .4 I}=9 I$

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