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MHT CET Physics question

PhysicsThermal Properties of MatterMHT CET

Emissive power of cube is and it radiates heat at the rate 60 watt at that temperature. The length of each side of cube will be

Answer: (C)

Solution

Surface area , so and m cm; 1 cm, 100 cm and 0.1 cm give

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Question ID VK-063401