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Emissivity e is a property of surface. S...

Emissivity `e` is a property of surface. Suppose for `t` surface emissivity e varies with Kelvin temperature `T` as `e=C T` (C is constant ). If energy emission rate at temperature `600, K` from the surface is `160 W`, what will be the energy emission rate (in watt) at `300 K` ?

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