A laser beam traveling through fog was observed to have an intensity of 1 (W m2) at a distance of 2 m from the laser gun and an intensity of 0 2 (W m2) at a distance of 3 m Given that the intensity of an electromagnetic wave is proportional to the square of its electric field amplitude, find the at...

Ext Eoe then the intensity must have a form or Ix t Ege x cosot ...

A laser beam traveling through fog was observed to have an intensity of 1 (W/m2) at a

Question:

A laser beam traveling through fog was observed to have an intensity of 1 (μW/m2) at a distance of 2 m from the laser gun and an intensity of 0.2 (μW/m2) at a distance of 3 m. Given that the intensity of an electromagnetic wave is proportional to the square of its electric-field amplitude, find the attenuation constant of fog.