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Find intersity of sound in dB if its int...

Find intersity of sound in `dB` if its intensity in `Watt// m^(2)` is `10^(-10)`.

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The correct Answer is:
B, D
Using the equation, `beta = 10 log _(10).(I)/(I_(0))`
`beta= 10 log _(10)((10^(-10))/(10^(-12)))= 10 log _(10) (10^(2))`
`= 20 dB`
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