The variation of thermal conductivity of a metal with temperature is...

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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

Answer: Option C

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