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The loudness level at a distance R from ...

The loudness level at a distance R from a long linear source of sound is found to be 40 dB. At this point, the amplitude of oscillations of air molecules is 0.01 cm. Then find the loundness level & amplitude at a point located at a distance '10R' from the source.

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`30 dB, 10 sqrt(10)` `mu`m
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