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The minimum length of a pipe closed at o...

The minimum length of a pipe closed at one end is 18cm, when a tuning fork of 480 Hz is used. If the inner diameter of the tube is 3.34 cm, then the velocity of sound in air will be nearly

A

350m/s

B

640m/s

C

340m/s

D

365m/s

Text Solution

Verified by Experts

The correct Answer is:
D
`v=4n(l+e)`
`=4xx480xx(18+0.3) xx10^(-2)`
`=4xx4.8xx(18+0.3xx3.34)`
`=4xx4.8xx(18+1.002)`
`=4xx4.8xx19`
`=19.2xx19`
=364.8 m/s
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