Question Detail
Question
What is the increase in loudness (in dB) when the sound intensity increases from 10-1 W/m² to 1 W/m²?
Correct Answer
Option B is the correct answer.
Detailed Explanation
The text calculates: L(10-1 W/m²) = 110 dB and L(1 W/m²) = 120 dB. The increase is 120 dB - 110 dB = 10 dB. It also directly shows L(10-1 → 1 W/m²) = 10log10(1 / 10-1) = 10log10(10) = 10 dB.
Hint
The increase in loudness is the difference between the final and initial decibel levels, or can be calculated directly from the ratio of the final to initial intensity.