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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 wavelength is 1 meter. If the wavelength of a child's voice is 1.5 m, then the frequency of the child's voice is

A

`200 Hz`

B

`150 Hz`

C

`400 Hz`

D

`350 Hz`

Text Solution

Verified by Experts

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