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The emissivity of a spherical body is 0.250. A spherical body with an unknown radius is suspended with a large evacuated enclosure whose walls are at 300K. If the power input required to maintaining the sphere at a temparature of 2500K is 5.5*10^3W, then find the radius of the sphere? (Hint:-By Stefen-Boltzman Law!!) Get the Answer......

The emissivity of a spherical body is 0.250. A spherical body with an unknown radius is suspended with a large evacuated enclosure whose walls are at 300K. If the power input required to maintaining the sphere at a temparature of 2500K is 5.5*10^3W, then find the radius of the sphere?   (Hint:-By Stefen-Boltzman Law!!) Get the Answer......
 

Grade:11

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