A sound source of 100 watts radiates sound uniformly in all directions.The intensity of the sound at a distance of 4.00 m is A) 0.301 W/m². B) 0.353 W/m². C) 0.497 W/m². D) 0.535 W/m². E) 0.621 W/m².

Question

Quizplus · Accepted Answer

The formula for intensity (I) of sound at a distance (r) from a source with power (P) is given by:
I = P/4πr^2

Substituting the given values, we get:
I = 100/4π(4)^2
I = 100/64π
I = 0.497 W/m^2

Hence, option C is correct.

A Sound Source of 100 Watts Radiates Sound Uniformly in All