1574. 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 September 7, 2025 by Admin W/m.k W/m W/m.k² None, A is just a number ✅ The correct answer is option C.