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Solution - Define Emissive Power and Coefficient of Emmision of a Body. - HSC Science (Computer Science) 11th - Physics

Question

Define emissive power and coefficient of emmision of a body.

Solution

Emissive power of a body at a given temperature is the quantity of radiant energy emitted by the body per unit time per unit surface area of the body at that temperature.
If ‘Q’ is the amount of radiant energy emitted, ‘A’ is the surface area of the body and ‘t’ is the time for which body radiates energy, then the emissive power is

`E=Q/(at)`

Coefficient of emission of a body is the ratio of the emissive power of the body at agiven temperature to the emissive power of a perfectly black body at the same temperature.
Coefficient of emission, `e=E/E_b`

 

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Reference Material

Solution for question: Define Emissive Power and Coefficient of Emmision of a Body. concept: Temperature and Heat. For the courses HSC Science (Computer Science), HSC Science (Electronics), HSC Science (General) , HSC Science (Computer Science), HSC Science (Electronics), HSC Science (General)
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