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JEE Main & Advanced Physics Wave Mechanics Question Bank Beats

  • question_answer
    The disc of a siren containing 60 holes rotates at a constant speed of 360 rpm. The emitted sound is in unison with a tuning fork of frequency                                             [KCET 2005]

    A)            10 Hz                                       

    B)            360 Hz

    C)            216 Hz                                     

    D)            6 Hz

    Correct Answer: B

    Solution :

               Frequency \[=\frac{360}{60}\times 60=360Hz.\]


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