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NEET 2014 Physics question

PhysicsDual Nature of Matter and RadiationNEET 2014

Light with an energy flux of falls on a perfectly reflecting surface at normal incidence. If the surface area is , the average force exerted on the surface is

Answer: (2)

Solution

Radiation pressure on a perfectly reflecting surface at normal incidence , so force . \dfrac{2× 25× 10^{4}× 15× 10^{-4}}{3× 10^{8}}$ =

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Question ID VK-091508