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A sphere of radius 5 cm at 1027^(@)C is ...

A sphere of radius 5 cm at `1027^(@)`C is suspended in a vaccum in an enclosure at `127^(@)`C. Assuming the sphere to be a black body calculate the rate of loss of heat.

Text Solution

Verified by Experts

The correct Answer is:
`5.11xx10^(8) J s^(-1)`
`Q= 4pir^(2)xxsigma(T^(4)-T_(0)^(4))=50118xx10^(3)` J/s
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