The left face of a one dimensional slab of thickness 0.2 m is maintained at 80°C and the right face is exposed to air at 30°C. The thermal conductivity of the slab is 1.2 W/m.K and the heat transfer co-efficient from the right face is 10 W/m2.K. At steady state, the temperature of the right face in °C is____________________?
Correct answer: D
Explanation
The temperature at the right face is found by balancing conduction and convection heat transfer. The calculation yields approximately 48.7°C.