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MHT CET Physics question

PhysicsDual Nature of Matter and RadiationMHT CET

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

Answer: (B)

Solution

Incident momentum per second N, the absorbed part transfers and the reflected part transfers twice its momentum

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Question ID VK-083658