Question

Question #d39b2

Answer 1

Remember that `10db` stands for `10xx` in the `log` scale

`:. 10log10=10xx1=10`
Similarly `-10db=>1/10 th`

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Required intensity of sound is `=10xx(5.81 xx 10^-9 Wm^-2)`
`=5.81 xx 10^-8 Wm^-2`