Q469
Pick out the wrong statement:
A.
With change in temperature, the radiant energy emitted by a black body remains unchanged
AnswerB.
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 × 10-8 kcal/m2.hr.°K4
Answer: Option A
Solution
Answer: Option A
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