Answer
option $c$
Work Step by Step
The intensity of a sinusoidal sound wave is $I=\frac {p_0^2}{2pv}$
Intensity α (Amplitude)$^2$
So the intensity directly proportional only with amplitude squared
College Physics (4th Edition)
by Giambattista, Alan; Richardson, Betty; Richardson, Robert
Published by
McGraw-Hill Education
ISBN 10:
0073512141
ISBN 13:
978-0-07351-214-3
Chapter 12 - Multiple-Choice Questions - Page 462: 3
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