If the intensity of a sound is increased by a factor of 1000,how is the decibel level changed? The new decibel level will be:
A) three units greater.
B) ten times greater.
C) thirty times greater.
D) twenty units greater.

Question

Quizplus · Accepted Answer

The decibel level is calculated using the formula: dB = 10 * log10(I/I0). An increase in intensity by a factor of 1000 corresponds to an increase of 10 * log10(1000) = 30 decibels.

If the Intensity of a Sound Is Increased by a Factor