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The frequency of a man’s voice is 300 Hz...

The frequency of a man’s voice is 300 Hz and its wave-length is 1m. If the wavelength of a child’s voice is 1.5m, then the frequency of the child’s voice is :

A

`200Hz`

B

`150Hz`

C

`400Hz`

D

`350Hz`.

Text Solution

Verified by Experts

The correct Answer is:
A
`(A)f_(1)lambda_(1)=f_(2)lambda_(2)`
`(300)(1)=(f_(2))(1.5)`
`200Hz=f_(2)`
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