The sound intensity level at a point 4 m from the point source is 10 dB,then what will be the sound level at a distance 2 m from the same source?

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Answer 1 · 2018-02-12T14:35:40

The sound level is #=16.02dB#

The sound level intensity decreases with the distance.

#L_2=L_1-10log_(10)(r_2/r_1)^2#

The sound intensity level is #L_1=10dB#

The distance is #r_1=4m#

The distance #r_2=2m#

#L_2=10-10log_10(4/2)^2#

#L_2=10-10*0.602#

#L_2=16.02dB#