# If the intensity of sound at a 5 m distance is 50\ \rm{W/m^2}. Calculate the Intensity at a...

## Question:

If the intensity of sound at a 5 m distance is {eq}50\ \rm{W/m^2} {/eq}. Calculate the Intensity at a distance of 20 m.

## Intensity

In physics, intensity measures the amount of energy per unit of area transversing a surface. The intensity due to a point source is inversely proportional to the squared distance from the source,

{eq}I \propto \dfrac{1}{r^2} {/eq},

presenting spherical symmetry.