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
(A) 77.2
(B) 71.2
(C) 63.8
(D) 48.7
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
(A) 77.2
(B) 71.2
(C) 63.8
(D) 48.7