A small-blackened solid copper sphere of radius 2.5 cm is placed in an evacuated chamber. The temperature of the chamber is maintained at 100 °C. At what rate energy must be supplied to the copper sphere to maintain its temperature at 110 °C? (Take Stefan’s constant σ to be 5.76 x 10² s⁻¹ K² and treat the sphere as blackbody.) - VgyanHub

Question:

24. A small-blackened solid copper sphere of radius 2.5 cm is placed in an evacuated chamber. The temperature of the chamber is maintained at 100 °C. At what rate energy must be supplied to the copper sphere to maintain its temperature at 110 °C? (Take Stefan’s constant σ to be 5.76 x 10² s⁻¹ K² and treat the sphere as blackbody.)

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Given & Formula :-

Solution :-

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