Question

The intensity of harmonic wave

• A. depends upon its frequency and not on its amplitude
• B. depends upon its amplitude and not on its frequency
• C. depends upon both, its frequency and not on amplitude
• D. depends neither on frequency nor on its amplitude

Answer 1

Answer: (C)

The intensity of wave
$ I=2 \pi^2 a^2 n^2 \rho v$
$\therefore I \propto a^2 \propto n^2$
Therefore the intensity of a wave depends upon both, its frequency and amplitude.