Heat Transfer Questions

Q.  What is a gray body?

a. a body of which the monochromatic emissivity (ε) is different wavelengths
b. a body of which the monochromatic emissivity (ε) is constant for the entire wavelength spectrum
c. a body of which the monochromatic emissivity (ε) is maximum for longest wavelength
d. none of the above


ANSWER: See Answer
 
No explanation is available for this question!
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