4539Chemical EngineeringMedium
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________?
A48.7
B77.2
C71.2
D63.8
Correct answer
A. 48.7
Explanation
The correct answer is 48.7.