Energy iis emitted from a hole in an electric furnace at the rate of 20 W, when the temperature of the furnace is727 °C. What is the area of the hole?(Take Stefan’s constant ¢ to be 5.7 x10*F s w2 K) - VgyanHub

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20. Energy iis emitted from a hole in an electric furnace at the rate of 20 W, when the temperature of the furnace is727 °C. What is the area of the hole?(Take Stefan’s constant ¢ to be 5.7 x10*F s w2 K)

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