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For a sound source of intensity IW//m^(2...

For a sound source of intensity `IW//m^(2)`, corresponding sound level is `B_0` decibel If the intensity is increased to `4I`, new sound level becomes.

A

`2B_(0)dB`

B

`(B_(0)+3)dB`

C

`(B_(0)+6)dB`

D

`4B_(0)dB`

Text Solution

Verified by Experts

The correct Answer is:
C
If intensity is doubled the sound level is increased by `3.0dB`. i.e., it becomes `(B_0+3)` decibels. Hence when intensity is increased four times, level becomes
`(B_0+6)`
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