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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

150 Hz

B

200 Hz

C

660 Hz

D

330 Hz

Text Solution

Verified by Experts

The correct Answer is:
C
Phase diff. `= (2pi)/(lamda)` (path diff)
`1.6 pi = (2pi)/(lamda) (0.4) " " :. lamda = 0.5m`
`:. n = (v)/(lamda) = (330)/(0.5) = 660 Hz`
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