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  3. JEE Main & Advanced

JEE Main & Advanced Sample Paper JEE Main - Mock Test - 28

  • question_answer
    A source of sound of frequency 256 Hz is moving rapidly towards a wall with a velocity of 5m/s. How many beats per second will be heard if sound travels at a speed of 330 m/s by an observer behind the source?

    Answer:

    (7.7)


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