If the energy radiated per second per sq. cm. of the surface for wave – McqOptions

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1.	If the energy radiated per second per sq. cm. of the surface for wave lengths lying between λ, and λ + dλ is represented by (eλ.dλ), then eλ is called
A.	absorptive power
B.	emissive power
C.	emissivity
D.	none of these
Answer» C. emissivity

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