Which one of the following statements concerning emissivity is false?
A)The emissivity is 1.0 for a perfect radiator.
B)The emissivity is 1.0 for a perfect absorber.
C)Emissivity depends on the condition of the surface.
D)Emissivity is a dimensionless quantity.
E)Emissivity depends on the surface area of the object.

Question

Quizplus · Accepted Answer

Emissivity is not dependent on the surface area of an object. It is a material property that represents the efficiency of an object's emission of thermal radiation.

Which One of the Following Statements Concerning Emissivity Is False