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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 l_1 = f_2 l_2`
`(300) = (f_2) (1.5)`
`200 Hz = f_2`
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