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Asked Nov 21, 2019
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At a distance of 4 m from a certain sound source, the sound level intensity is 70 dB. What is the power being emitted by the sound source? (Assume I0=10−12W/m2.)

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Given that at a distance of 4m, the sound level intensity is 70dB Intensity level of sound is calculated by I B10log I Ix10 70 I=| 10-12 W x 10 m W -x 10 I =10-12 2 1 105 W/m2

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