Question

sound intensity level increases by 30 db. the sound intensity increases by

Answer 1

The difference in intensity 10-8 watts/m2 and 10-4 watts/m2 (10000 units) can be calculated in decibels as

ΔLI = 10 log ((10-4 watts/m2) / (10-12 watts/m2)) - 10 log (( 10-8 watts/m2) / ( 10-12 watts/m2))

= 40 dB

Increasing the sound intensity by a factor of

10 raises its level by 10 dB

100 raises its level by 20 dB

1000 raises its level by 30 dB

10000 raises its level by 40 dB

and so on

Answer 2

Increasing the sound intensity by a factor of

• 10 raises its level by 10 dB
• 100 raises its level by 20 dB
• 1000 raises its level by 30 dB

And so on...

Hope it will help :)