The loudness, L, measured in decibels (Db), of a sound intensity, I, measured in watts per square meter, is de

Question

The loudness, L, measured in decibels (Db), of a sound intensity, I, measured in watts per square meter, is defined as L = 10 log StartFraction I Over I 0 EndFraction, where I 0 = 10 Superscript negative 12 and is the least intense sound a human ear can hear. What is the approximate loudness of a rock concert with a sound intensity of 10–1? 
2 Db
22 Db
60 Db
110 Db

GPT-5 mini · Answer

L = 10 log10(I/I0) = 10 log10(10^(−1)/10^(−12)) = 10 log10(10^11) = 10·11 = 110 dB.

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