The loudness level at a distance \( \mathrm{R} \) from a long linea...

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

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