Physics

Problem

I

represents intensity of sound wave,

A

the amplitude and

r

the distance from the source. Then, match the following two columns.

Column I	Column II
(a) Intensity due to a point source.	(p) proportional to $r^{-1/2}$
(b) Amplitude due to a point source.	(q) proportional to $r^{-1}$
(c) Intensity due to a line source.	(r) proportional to $r^{-2}$
(d) Amplitude due to a line source.	(s) proportional to $r^{-4}$