g power output of 87 W. At what distance will the decibel reading be 120 dB, which is noise level of a loud indoor rock concert

Given that,

Output power = 87 W

Decibel reading = 120 dB

We need to calculate the intensity of sound

Using formula of intensity of sound

Put the value into the formula

We need to calculate the distance

Using relation of power out[ut and intensity

Put the value into the formula

Hence, The distance is 2.63 m

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