The sound of 40 decibels is
A) twice as intense as the sound of 20 decibels.
B) four times as intense as the sound of 20 decibels.
C) 10 times as intense as the sound of 20 decibels.
D) 100 times as intense as the sound of 20 decibels.
E) 1000 times as intense as the sound of 20 decibels.

Question

Quizplus · Accepted Answer

The decibel scale is logarithmic, meaning each 10-decibel increase represents a tenfold increase in intensity. Therefore, a 40-decibel sound is 100 times as intense as a 20-decibel sound.

The Sound of 40 Decibels Is