An open pipe is suddenly closed with the result that (P) the second overtone of the closed pipe ...

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An open pipe is suddenly closed with the result that
(P) the second overtone of the closed pipe is found to - be higher in frequency by \( 100 \mathrm{~Hz} \), than the first overtone of the original pipe. The fundamental - frequency of open pipe will be :
(1) \( 100 \mathrm{~Hz} \)
(2) \( 300 \mathrm{~Hz} \)
(3) \( 150 \mathrm{~Hz} \)
(4) \( 200 \mathrm{~Hz} \)
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