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Q. |
What relation between emissivity, e, and Absorptive Power, a, is given by Kirchhoff’s law? |
A. | e < a |
B. | e > a |
C. | e = a |
D. | no specific relation |
Answer» C. e = a | |
Explanation: kirchhoff’s law states that for any object the emissivity is always equal to absorptive power. for a black body, both of them are equal to one. |
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