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 by 100 Hz than fundamental frequency of open pipe, then the fundamental frequency of open pipe is:

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480 Hz

300 Hz

240 Hz

200 Hz

answer is D.

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Detailed Solution

Fundamental frequency of open organ pipe=v2lFrequency of third harmonic of closed pipe=3V4l∴3v4l=100+v2l⇒3v4l−2v4l=v4l=100⇒V2l=200 Hz.

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