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Velocity of sound wave in air is 330 m/s...

Velocity of sound wave in air is 330 m/s for a particular sound in air.A path difference of 40 cm is equivalent to a phase difference of 1.6 `pi.` The frewuency of this wave is

A

165 Hz

B

150 Hz

C

660 Hz

D

330 Hz

Text Solution

Verified by Experts

The correct Answer is:
C

As, phase difference `=(2pi)/(lamda)xx` path difference
`rArr" "1.6pi = (2pi)/(lamda)xx40rArrlamda=50cm=0.5m`
Now, as `" "v=lamdaf rArrf=v/(lamda)=(330)/(0.5)=660Hz`
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