What is intensity of radiation? - Heat Transfer

Q.  What is the intensity of radiation (I)?
- Published on 11 Aug 15

a. rate of heat radiation from a surface per unit area
b. rate of heat radiation from a surface per unit solid angle
c. rate of heat radiation from a surface per unit area per unit solid angle
d. none of the above

ANSWER: rate of heat radiation from a surface per unit area per unit solid angle

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