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Two sound waves of wavelength (92)/(147)...

Two sound waves of wavelength `(92)/(147) m and (92)/(149)m` produce 8 beats per second, when allowed to surperimpose/ The velocity of sound is

A

320 m/s

B

332 m/s

C

368 m/s

D

312 m/s

Text Solution

Verified by Experts

The correct Answer is:
C
`n_(2) - n_(1) = n`
`(v)/(lamda_(2)) - (v)/(lamda_(1)) = 8`
`v[(149)/(92) - (197)/(92)] = 8`
`2v = 8 xx 92`
`v 4 xx 92 = 368`
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