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A wall is moving with constant velocity `u` towards a fixed source of sound of frequency `f`. The velocity of sound is `v`. The wavelength of the sound reflected by the wall is

A

`(v-u)/(v+u). v/f`

B

`v/f`

C

`(v-u)/f`

D

`(v+u)/f`

Text Solution

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The correct Answer is:
A
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