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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

368 m/s

B

320 m/s

C

312 m/s

D

332 m/s

Text Solution

Verified by Experts

The correct Answer is:
A
`n_(1) = (v)/(92//147) = (149v)/(92) and n_(2) = (149v)/(92)`
`:. n_(2) gt n_(1) " " n_(2) - n_(1) = ((149 - 147)/(92))v`
`8 = (2v)/(92) " "v = 368 m//s`
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