If the decibel of a sound is doubled, then the relative intensity will be:
A)doubled.
B)squared.
C)increased by a factor of 10.
D)increased by a factor of 100.

Question

Quizplus · Accepted Answer

The relative intensity of a sound is proportional to the square of its decibel level. Therefore, if the decibel level is doubled, the relative intensity will be quadrupled (squared). Choice A is incorrect as doubling the decibel level results in a greater increase in intensity than just doubling it. Choices C and D are also incorrect as they represent much larger increases in intensity than just doubling the decibel level.

If the Decibel of a Sound Is Doubled, Then the Relative