JEE Main 2020PhysicsWaves and SoundMediumMCQ

JEE Main 2020 — Waves and Sound Question with Solution

JEE Main 2020 (09 Jan Shift 1)

Question

Three harmonic waves having equal frequency v and same intensity I0 , have phase angles 0,π4 and -π4 respectively. When they are superimposed the intensity of the resultant wave is close to:

Choose an option

Show full solutionCorrect option: A
Correct answer
A5.8I0

Step-by-step explanation


AR=2+1A
IR=2+12I0
=3+22I0=5.8I0

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About this question

This is a previous-year question from JEE Main 2020, covering the Waves and Sound chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.