A person is talking in a small room and ...

A person is talking in a small room and the sound intensity level is `60dB` everywhere within the room. If there are eight people talking simultaneously in the room, what is the sound intensity level?

60 dB

69 dB

74 dB

81 dB

Text Solution

Verified by Experts

The correct Answer is:

`60 = 10 "log" I/(I_0)`
`b = 10 "log" (8I)/(I_0)`
`= 10 "log" 8 + 10 "log" I/(I_0) = 30 log 2 + 60 = 69 dB`

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