Intensity of the sound wave in dB = 10 log (I / Io)
log ( I / I o) = 20/10 = 2
I o = 10 -12 W / m2
I = e 2 x 10 -12 = 7.38 x 10 -12 W / m2
If IL is 20 dB then sound find corresponding wave ? intensity of the
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