Question
a.
With change in temperature, the radiant energy emitted by a black body remains unchanged.
b.
Absorptivity of a body approaches unity in case of diffuse reflection.
c.
Absorptivity of a perfectly black body is unity.
d.
Value of Stefan-Boltzman constant is 4.876 x 10⁻⁸ KCal/m².hr.°K⁴.
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