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A two fold increase in intensity of a wa...

A two fold increase in intensity of a wave implies an increase of (Given `log_(10)2=0.3010`.)

A

`2dB`

B

`10dB`

C

`3.01dB`

D

`0.5dB`

Text Solution

Verified by Experts

The correct Answer is:
C
`L=10log_(10).(I)/(I_0)`decibel
`L'=10log_(10).(2I)/(I_0)` decibel
`L'-L=10[log_(10).(2I)/(I_0)log_(10).(I)/(I_0)]`
`=10log_(10)2=10xx0.3010=3.01dB`
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