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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 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 10 W of power,find the force exerted by it on the surface.

Grade:12

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