The intensity of sound from a point source is 1.0 × 10 -8 W m -2 at a distance of 50 m from the source. What will be the intensity at a distance of 25 m from the source?

Question

Philoid · Accepted Answer

Given:
The intensity =, when the distance of the point source

= 5 m.
Let be the intensity of the point source at a distance

As we know,

So,

⇒

On substituting the respective values, we get:

The intensity of sound from a point source is 1.0 × 10-8 W m-2 at a distance of 50 m from the source. What will be the intensity at a distance of 25 m from the source?

The intensity of sound from a point source is 1.0 × 10^-8 W m^-2 at a distance of 50 m from the source. What will be the intensity at a distance of 25 m from the source?