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A source of sound is in the shape of a l...

A source of sound is in the shape of a long narrow cylinder radiating sound waves normal to the axis of the cylinder. Two points P and Q are at perpendicular distances of 9 m and 25 m from the axis. The ratio of the amplitudes of the waves at P and Q is :-

A

`5:3`

B

`sqrt(5):sqrt(3)`

C

`3:5`

D

`25:9`

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The correct Answer is:
A
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