B M Sharma Solutions for Chapter: Sound Waves and Doppler Effect, Exercise 1: ILLUSTRATIONS

The intensity of a sound wave at a fixed distance from a speaker vibrating at $1.00\mathrm{kHz}$ is $0.60 \mathrm{W}/{\mathrm{m}}^2$.

Determine the intensity that results if the frequency is increased to $\begin{array}{ll}2.50& \mathrm{kHz}\end{array}$ while a constant displacement amplitude is maintained.

The intensity of a sound wave at a fixed distance from a speaker vibrating at $1.00\mathrm{kHz}$ is $0.60 \mathrm{W}/{\mathrm{m}}^2$.

Calculate the intensity if the frequency is reduced to $0.500\mathrm{kHz}$ and the displacement amplitude is doubled.