Question
A sound absorber attenuates the sound level by 20 $\mathrm{dB}$. The intensity decreases by a factor of (A) 100(B) 1000(C) 10000(D) 10
Step 1
Step 1: We know that the loudness or sound level (L) in decibels is given by the formula: \[L = 10 \log_{10} \left(\frac{I}{I_0}\right)\] where \(I\) is the intensity of the sound and \(I_0\) is the reference intensity. Show more…
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A sound absorber attenuates the sound level by $20 \mathrm{~dB}$. The intensity decreases by a factor of (a) 1000 (b) 10000 (c) 10 (d) 100
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Round 2
Increasing the intensity of a sound by a factor of 100 causes the sound level to increase by what amount? (a) 100 dB (b) 20 dB (c) 10 dB (d) 2 dB
If the intensity of sound increases by a factor of 10^5, the increase in the intensity level is A. 5 dB B. 10 dB C. 25 dB D. 50 dB
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