An organ pipe open on both ends in the \( n \)th harmonic is in resonance with a source of \( 10...

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An organ pipe open on both ends in the \( n \)th harmonic is in resonance with a source of \( 1000 \mathrm{~Hz} \). The length of pipe is \( 16.6 \mathrm{~cm} \) and speed of sound in air is \( 332 \mathrm{~m} / \mathrm{s} \), then find the value of \( n \).
(a) 3
(b) 2
(c) 1
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