What is the sound level of a sound whose intensity is 20 x 10-6 W/m2?

Question

Question

Answer 1

Answer #1

the sound intensity is given by

B=10 log(I/Io)

for normal hearing , Io=10^-12W/m²

so using the above eqn we get

B=10 log(20*10^-6/10^-12)=73 dB

so the answer is 73 dB or 73.01 dB

Answer 2

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