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In a resonance tube, using a tuning fork...

In a resonance tube, using a tuning fork of frequency `325 Hz`, the first two resonance lengths are observed at `25.4 cm` and `77.4 cm`. The speed of sound in air is

A

`338 ms^(-1)`

B

`328 ms^(-1)`

C

`330 ms^(-1)`

D

`320 ms^(-1)`

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The correct Answer is:
A
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