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Two waves of wavelength 50 cm and 51 cm ...

Two waves of wavelength 50 cm and 51 cm produce 12 beat/s . The speed of sound is

A

`340 ms^(-1)`

B

`332 ms^(-1)`

C

`153 ms^(-1)`

D

`306 ms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
D
The frequency of beats is given by
`n=n_(1)-n_(2)=v/lambda_(1)-v/lambda_(2)=v(1/0.05-1/0.51)`
`implies 12=v(2-1.9608)=v xx 0.0392`
or, `v=12/0.0392=306 ms^(-1)`
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