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NEET Sample Paper NEET Sample Test Paper-27

  • question_answer
    The source X of unknown frequency produce 8 beats with a source of 250 Hz and 12 beats with a source of 270 Hz. The frequency of source X will be:

    A)  258 Hz          

    B)  242 Hz

    C)  262 Hz          

    D)  382 Hz

    Correct Answer: A

    Solution :

    The frequency of the source X \[=270\pm 12=282\]  or  \[258.\] It is clear that n ^ 258 Hz alone can given 8 beat/sec. with source of 250 Hz.          


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