Question

unit of intensity of sound or
sound level

Answer 1

Thus, sound intensity has been evaluating power per square meter.

In fact, common unit of power is measuring as Watt and unit of SI is called the decibel.

I is the intensity of the sound. It is expressed in watts per meter and IO is the reference intensity as defined to be 10-12w/m2.

Answer 2

Intensity of sound is expressed in watts per meter.

Hope it will help..