If the intensity of the incident radiowave is `1 "watt"//m^2` is absorbed by the surface, find the pressure exerted on the surface.

If the intensity of the incident radio wave of 1 "watt"//m^2 is reflected by the surface, find the pressure exerted on the surface.

If the intensity of incident radio wave is 3 Watt/ m^2 ,what is the pressure exerted by the absorbed wave?

An e.m. wave with poynting vector 6watt//m^2 is absorbed by a surface of area 12m^2 . Find the force on the surface.

A parallel beam of the light is incident normally on a plane surface absorbing 40% of the light and reflecting the rest. If the incident beam carries 10 watt power, find the force exerted by it on the surface.

" of intensity "1.5kW/m^(2)" is incident normally on a perfectly absorbing surface.The pressure exerted by the light on the surface is "n times10^(-6)Pa" .Value of "n" is "

A parallel beam of monochromatic light of frequency v is incident on a surface. Intensity of the beam is I and area of the surface is A. Find the force exerted by the light beam on the surface for following cases– (i) the surface is perfectly absorbing and the light beam is incident normally on it. (ii) the surface is perfectly reflecting and the light beam is incident normally. (iii) the surface is perfectly absorbing and the light beam is incident at an angle of incidence theta . (iv) the surface is perfectly reflecting and the light beam is incident at an angle of incidence theta .