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MHT CET 2023 Physics question

PhysicsThermal Properties of MatterMHT CET 2023

A black body at temperature C radiates heat at the rate of 5 cal/cms. At a temperature C, its rate of emission in units of cal/cms will be

Answer: (A)

Solution

Stefan's law: the rate of emission per unit area with in kelvin. and , so . Then and $ = 5 × 81 = 405\

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Question ID VK-097960