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Two adjacent resonance frequency of an o...

Two adjacent resonance frequency of an open organ pipe are `1800` and `2100 Hz`. Find the length of the tube. The speed of sound in air is `330 m//s`.

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The correct Answer is:
`55 cm`
`Deltan = (V)/(2t) = (2100 - 1800)`
`l = (330)/(2(300)) m , = (330 xx 100)/(2 xx 300) cm = 55 cm`
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