Question

Vacuum
altravel in
7 and
od of
vave
een
A point source emits sound equally in all directions
in a non-absorbing medium. Two points P and Q are
at distance of 2 m and 3 m respectively from the
source. The ratio of the intensities of the waves at
P and Q is
[AIPMT (Prelims)-2005)
08]
(1) 9:4
(3) 3:2
(2) 2:3
(4) 4:9
​

Answer 1

Answer:

intensity is inversly proportional to square of distance.

ip/iq=3^2/2^2= 9/4

option 1