Two sound waves with wavelengths 5.0 m a...

Two sound waves with wavelengths `5.0 m` and `5.5 m` respectively, each propagates in a gas with velocity `30m//s` We expect the following number of beats per second:

A

12

B

0

C

1

D

6

Text Solution

Verified by Experts

The correct Answer is:

D

Number of beats per second
`=(v)/(lambda_(1))-(v)/(lambda_(2))` `=330((1)/(5)-(1)/(5.5))=66-60=6`

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