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When a person wears a hearing aid, the s...

When a person wears a hearing aid, the sound intensity level increases by 30 dB. The sound intensity increases by

A

`e^2`

B

`10^3`

C

`30`

D

`10^2`

Text Solution

Verified by Experts

The correct Answer is:
B
`L_2-L_1=30dB`
`10dBlog((I_2)/(I_0))-10dBlog((I_1)/(I_0))=30dB`
`log_(10)((I_2)/(I_1))=3implies(I_2)/(I_1)=10^3`
Hence the sound intensity increases by `10^3`.
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CENGAGE PHYSICS ENGLISH-SOUND WAVES AND DOPPLER EFFECT-Single Correct
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