1959Mechanical EngineeringMedium
According of Kirchhoff’s law________?
Aemissive power depends on temperature
Bradiant heat is proportional to fourth power of absolute temperature
Cratio of emissive power to absorptive power is maximum for perfectly black body
Dratio of emissive power to absorptive power for all bodies is same and is equal to the emissive power of a perfectly black body
Eemissive power and absorptivity are constant for all bodies
Correct answer
D. ratio of emissive power to absorptive power for all bodies is same and is equal to the emissive power of a perfectly black body
Explanation
The correct answer is ratio of emissive power to absorptive power for all bodies is same and is equal to the emissive power of a perfectly black body.