The variation of thermal conductivity of a metal with temperature is often correlated using an expression of the form K = K0 + at, where, K is the thermal conductivity and T is the temperature (in °K). The units of ‘a’ in SI system will be________________?
(A) W/m.k
(B) W/m
(C) W/m.k2
(D) None, ‘a’ is just a number
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