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Find the sound level in decibel of a sou...

Find the sound level in decibel of a sound wave which has an intensity of `10^(-4) Wm^(-2)" if "I_(0)=10^(-12)Wm^(-2)`.

Text Solution

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`I=10^(-4) Wm^(-2), I_(0)=10^(-12) Wm^(-2)`
`L=log_(10) ""I/I_(0)=log_(10)""(10^(-4))/(10^(-12))`
`L=log_(10)^(8) =8"bel "=80dB`
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