An open pipe is suddenly closed at one end with the result that the frequency of third harmonic of the closed pipe is found to be higher at 100 Hz. The fundamental frequency of the open pipe is

Question

Dr. Abubacker · Accepted Answer

(a) Frequency of third harmonic of closed pipe
$n_{1} = \frac{3v}{4l}$
Fundamental frequency of open pipe
$n_{2} = \frac{2}{2l}$
As $n_{1} - n_{2} = 100$
$\frac{v}{4l} = 100$
$	herefore\ \frac{v}{2l} = 200\ Hz$

Q. An open pipe is suddenly closed at one end with the result that the frequency of third harmonic of the closed pipe is found to be higher at 100 Hz. The fundamental frequency of the open pipe is

Explanation

Reviewed by Dr. Abubacker

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