The emissive power of gray body is ____.

The emissive power of gray body is ____.

a. grater than the emissive power of black body
b. less than the emissive power of black body
c. equal to the emissive power of black body
d. none of the above

Correct Answer : b. less than the emissive power of black body

Explanation :

Gray body absorbs definite percentage of incident radiation not all the incident radiation. Thus emissive power of gray body is always less than that of black body.