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The sound level at a point 5.0 m away from a point source is 40 dB.

Question:

The sound level at a point $5.0 \mathrm{~m}$ away from a point source is $40 \mathrm{~dB}$. What will be the level at a point $50 \mathrm{~m}$ away from the source?

Solution:

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