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A point source emits sound equally in al...

A point source emits sound equally in all directions in a non-absorbing medium. Two point `P` and `Q` are at distance of `2 m` and `3 m` respectively from the source. The ratio of the intensities of the wave at `P` and `Q` is :

A

`3:2`

B

`2:3`

C

`9:4`

D

`4:9`

Text Solution

Verified by Experts

The correct Answer is:
C
Use ` I prop (1)/(r^(2))`
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