A person driving car at a..... | JEE Main 2023 | Sound Waves

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JEE MAIN 2023

06-04-23 S1

Question

A person driving car at a constant speed of 15 m/s is approaching a vertical wall. The person notices a change of 40 Hz in the frequency of his car’s horn upon reflection from the wall. The frequency of horn is ________ Hz. (Given : Speed of sound : 330 m/s)

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