Aradio wave transmits 36.8 w/m2 of power per unit area. a flat surface of area a is perpendicular to the direction of propagation of the wave. assuming the surface is a perfect absorber, calculate the radiation pressure on it.

122.6 nPa

Explanation:

Here ,

Intensity of incident light , I = 36.8 W/m^2

angle with area, θ = 0 degree

for a perfect absorber ,

radiation pressure =

I=  Intensity of incident light, c= speed of light

radiation pressure =  

radiation pressure = 12.26×10^-8 Pa

radiation pressure = 122.6 nPa

the radiation pressure acting on the 122.6 nPa