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JEE Main & Advanced Physics Wave Mechanics Question Bank Doppler's Effect

  • question_answer
    A source emits a sound of frequency of 400 Hz, but the listener hears it to be 390 Hz. Then [Orissa JEE 2003]

    A)            The listener is moving towards the source

    B)            The source is moving towards the listener

    C)            The listener is moving away from the source

    D)            The listener has a defective ear

    Correct Answer: C

    Solution :

               Since apparent frequency is lesser than the actual frequency, hence the relative separation between source and listener should be increasing.


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