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Sahay Sir > Question Answers > Cengage NEET by C.P Singh > Part 2 > Chapter 11 - Photoelectric Effect > 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, 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 20 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 20 W of power find the force exerted by it on the surface.