Question:medium

Lengths of two open pipes are in ratio 5:6. If 8 beats per second are heard when both vibrate in fundamental mode, find frequency of third harmonic of longer pipe.

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For open pipes: frequency ∝ 1/L and harmonics are integer multiples.

Updated On: Jun 17, 2026

144 Hz
240 Hz
120 Hz
60 Hz

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The Correct Option is A

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