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A sound absorber attenuates the sound le...

A sound absorber attenuates the sound level by 20 dB. The intensity decreases by a factor of :

A

1000

B

10000

C

10

D

100

Text Solution

Verified by Experts

The correct Answer is:
D
`dB=10"log"(I_(2))/(I_(1))rArr 20=10"log"(I_(2))/(I_(1))`
`rArr I_(2)=100I_(1)`
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ALLEN-WAVES AND OSCILLATIONS-Part-1(Exercise-01)
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