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Heat Transfer Refrigeration and Air Conditioning

Q1:

Kirchhoff's law states that

A the total radiation from a black body per second per unit area is directly proportional to the fourth power of the absolute temperature

B the wave length corresponding to the maximum energy is proportional to the absolute temperature

C 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

D none of the above

ANS:C - 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

Explanation: No answer description is available.



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