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If the displacement amplitude of sound i...

If the displacement amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity will become

A

double

B

half

C

one-fourth

D

same

Text Solution

Verified by Experts

The correct Answer is:
C
`I=2pi^(2) f^(2) A^(2) rho v`
`I'=2pi^(2) (f//4)^(2) (2A)^(2) rho v`
`(I')/I=1/4`
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