20. Energy is emitted from a hole in an electric furnace at the rate of 20 W....

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20. Energy is emitted from a hole in an electric furnace at the rate of 20 W. when the temperature of the furnace is 727 "C. What is the area of the hole? (Take Stefan's constant o to be 5.7 x 10 Js' m K4) [Ans: 3.5 x 104m- ]

Posted Date: Jul 01, 2024 08:33 AM

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20. Energy is emitted from a hole in an electric furnace at the rate of 20 W....

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