Pick out the wrong statement?

6667Chemical EngineeringMedium

AWith change in temperature, the radiant energy emitted by a black body remains unchanged

BValue of Stefan-Boltzmann constant is 4.876 × 10-8 KCal/m2.hr.°K4

CAbsorptivity of a body approaches unity in case of diffuse reflection

DAbsorptivity of a perfectly black body is unity

Correct answer

A. With change in temperature, the radiant energy emitted by a black body remains unchanged

Explanation

The correct answer is With change in temperature, the radiant energy emitted by a black body remains unchanged.

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