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NEET Sample Paper NEET Sample Test Paper-49

  • question_answer
    Two closed end pipes when sounded together produce 5 beat per second. If their length are in the ratio \[100\,\,:\,\,101\], then fundamental notes produced by them, are-     

    A) 245, 250                       

    B) 250, 255

    C) 495, 500                       

    D) 500, 505

    Correct Answer: D

    Solution :

    \[\frac{N}{N+5}\,\,=\,\,\frac{100}{101}\,\,\] \[101\,\,N\,\,=\,\,100\,\,N\,\,\,+\,\,500\] \[N\,\,=\,\,500\,Hz\] \[N\,\,+\,\,5\,\,=\,\,505\,Hz.\]


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