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A sound wave whose frequency is 5000 Hz ...

A sound wave whose frequency is 5000 Hz travels in air and then hits the water surface. The ratio of its wavelength in water and air is

A

`4.30`

B

`0.23`

C

`5.30`

D

`1.23`

Text Solution

Verified by Experts

The correct Answer is:
A
4.30
Frequency of sound,f = 5000 Hz
Velocity of sound in air, `v_(a) = 343 ms^(-1)`
Velocity of sound in water, `v_(w) = 1480 ms^(-1)`
The ratio of wavelength `(lambda_(a))/(lambda_(w)) = (v_(w))/(f) xx (f)/(v_(a)) = (1480)/(5000) xx (5000)/(343) = (1480)/(343)`
`= 4.31`
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