Question:
The intensity of sound from a point source is $1.0 \times 10^{-8} \mathrm{~W} \mathrm{~m} \mathrm{~m}^{-2}$ at a distance of $5.0 \mathrm{~m}$ from the source. What will be the intensity at a distance of $25 \mathrm{~m}$ from the source?
Solution:
