Discussion :: Heat and Mass Transfer
- According of Kirchhoff's law
|
A.
Radiant heat is proportional to fourth power of absolute temperature |
|
B.
Emissive power depends on temperature |
|
C.
Emissive power and absorptivity are constant for all bodies |
|
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 |
Whatsapp
Facebook
Answer : Option D
Explanation :
Kirchhoff's law states that the emissivity and the absorptivity of a surface at a given temperature and wavelength are equal. The ratio of the emissive power and absorptive power of all bodies is the same and is equal to the emissive power of a perfectly black body. This statement is known as Kirchhoff's law
Be The First To Comment