The intensity of sound from a point source is

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:

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