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  3. RAJASTHAN ­ PET

RAJASTHAN ­ PET Rajasthan PET Solved Paper-2005

  • question_answer
    One end closed pipe of length L resonented at any frequency. The length of open both ends pipe, for resonant at same frequency will be

    A)  L/2            

    B)  L

    C)  3L/2           

    D)  2L

    Correct Answer: D

    Solution :

     \[{{n}_{closed}}=\frac{v}{4L}\] \[{{n}_{open}}=\frac{v}{2L'}\] According to question \[{{n}_{closed}}={{n}_{open}}\] \[\Rightarrow \] \[L'=2L\]


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