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How many times more intense is a 90 dB s...

How many times more intense is a `90 dB` sound than a `40 dB` sound?

A

`2.5`

B

`5`

C

`50`

D

`10^(5)`

Text Solution

Verified by Experts

The correct Answer is:
D
`L_(2) - L_(1) = 10log_(10) ((I_(2))/(I_(1)))`
`(90 - 40) = 10 log_(10) ((I_(2))/(I_(1)))`
`(I_(2))/(I_(1)) = 10^(5)`
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