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Q.

A closed organ pipe 70cm long is sounded. If the velocity of sound is 331 m/s, what is the fundamental frequency of vibration of the air column?

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Detailed Solution

Closed pipe length: $l = 70 cm; V = 331 {ms}^{- 1}$
Fundamental frequency: $n = \frac{V}{4 ℓ} = \frac{331}{4 \times 70 \times 10^{- 2}} = 118 .2 Hz$

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