A parallel beam of light is incident normally on a plane surface absorbing 40% of the light and reflecting the rest. If the incident beamm carries 60 W of power, the force exerted by it on the surface is

A parallel beam of light is incident normally on a plane surface absorbing 40% of the light and reflecting the rest. If the incident beam carries 60 W of power, the force exerted by it on the surface is

A beam of white light is incident normally on a plane surface absorbing 70% of the light and reflecting the rest. If the incident beam carries 20 W of power, the force exerted by it on the surface is

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.

A beam of white light is incident normally on a plane surface absorbing 50% of the light and reflecting the rest. If the incident beam carries 10 W of power, find the force exerted by it on the surface.

A beam of white light is incident normally on a plane surface absorbing 70% of the light and reflecting the rest. If the incident beam carries 30 W of power, find the force exerted by it on the surface.