A point source emits sound equally in all directions in a non-absorbing medium. Two points `P` and `Q` are at the distance of `9 meters` and 25 meters respectively from the source. The ratio of amplitudes of the waves at `P` and `Q` is…..

Answer

`25:9`

Explanation

`I prop ("amplitude")^(2)`
For point source `I prop (L//r^(2))`
`therefore` Amplitude `prop (L//r)`
`(A_1)/(A_2)=(r_2)/(r_1)=25/9`