Tripling the distance between sound source and a listener will change the intensity,as detected by the listener,by what factor?
A)1/9
B)0.33
C)3.0
D)9.0

Question

Quizplus · Accepted Answer

Intensity of sound is inversely proportional to the square of the distance. So, if the distance is tripled, the intensity will decrease by a factor of (1/3)^2 = 1/9. Therefore, the correct answer is A) 1/9.

Tripling the Distance Between Sound Source and a Listener Will