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J & K CET Engineering J and K - CET Engineering Solved Paper-2013

  • question_answer
    The fundamental frequency of an open pipe of length \[1\text{ }m,\] if the speed of sound in air is \[340\text{ }m/s\]is

    A)  \[340\text{ }Hz\]          

    B)  \[170\text{ }Hz\]

    C)  \[680\text{ }Hz\]          

    D)  \[85\text{ }Hz\]

    Correct Answer: B

    Solution :

    For open pipe, \[v=\frac{v}{2l}\] Given,  \[v=340m/s,\,\,l=1m\] \[\therefore \] \[v=\frac{340}{2\times 1}=170Hz\]


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