Q. Pick out the wrong statement: (Solved)
1. With change in temperature, the radiant energy emitted by a black body remains unchanged
2. Absorptivity of a body approaches unity in case of diffuse reflection
3. Absorptivity of a perfectly black body is unity
4. Value of Stefan-Boltzmann constant is 4.876 × 10-8 KCal/m2 .hr.°K4
- a. With change in temperature, the radiant energy emitted by a black body remains unchanged