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MHT CET 2022 Physics question

PhysicsThermal Properties of MatterMHT CET 2022

Heat energy is incident on the surface at the rate of 1000 J/min. If co-efficient of absorption is 0.8 and coefficient of reflection is 0.1, then heat energy transmitted by the surface in 5 minutes is

Answer: (B)

Solution

For radiant heat incident on a surface, absorption coefficient + reflection coefficient + transmission coefficient (). So . Heat incident in 5 minutes J. Heat transmitted J,

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Question ID VK-093504