Q498
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
AnswerAnswer: Option D
Solution
Answer: Option D
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