The sound intensity level at a point $4 \,m$ from the point source is $10 \,dB$, then the sound level at a distance $2 \,m$ from the same source will be ........ $dB$
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(b)
$I \propto \frac{1}{r^2}$
$\therefore$ If at two $m$ intensity is $I_1$ at $4 \,m$, intensity is $\frac{I_1}{4}$
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