JEE Main 2013 — Waves and Sound Question with Solution
JEE Main 2013 (22 Apr Online)
Question
A and B are two sources generating sound waves. A listener is situated at . The frequency of the source at is . A, now, moves towards with a speed . The number of beats heard at is 6 . When moves away from with speed , the number of beats heard at is 18 . The speed of sound is . The frequency of the source at is :
Choose an option
Show full solutionCorrect option: C
Correct answer
C
Step-by-step explanation
Case 1: When source is moving towards stationary listener apparent frequency Case 2 : When source is moving away from the stationary listener In case 1 number of beats heard is 6 and in case 2 number of beats heard is 18 therefore frequency of the source at
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This is a previous-year question from JEE Main 2013, 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.