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NEET Sample Paper NEET Sample Test Paper-93

  • question_answer
    A closed organ pipe and an open organ pipe are tuned to the same fundamental frequency. What is the ratio of their lengths?

    A) 1 : 2                 

    B)        2 : 1  

    C) 2 : 3                 

    D)        4 : 3

    Correct Answer: A

    Solution :

    [a] For closed organ pipe \[\frac{\lambda }{4}=\ell \]\[\Rightarrow \]\[\lambda =4\ell ;\] \[n=\frac{v}{\lambda }=\frac{v}{4\ell }\] For open organ pipe, \[\frac{\lambda }{2}=\ell \] \[\Rightarrow \] \[\lambda =2\ell ;\] \[n'=\frac{v}{\lambda }=\frac{v}{2\ell }\] \[n'=2n;\] \[n:n'=1:2\]


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