JEE Main 2021 — Waves and Sound Question with Solution
JEE Main 2021 (24 Feb Shift 2)
Question
Two cars are approaching each other at an equal speed of When they see each other, both blow horns having a frequency of The beat frequency heard by each driver will be _______ [Velocity of sound in air is
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Show full solutionCorrect answer: 8
Correct answer
8
Step-by-step explanation
Frequency of sound heard by car- which comes by reflection from car-
Frequency of sound coming directly from car-
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This is a previous-year question from JEE Main 2021, 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.