The inner and outer surfaces of a furnace wall, 25 cm thick, are at 300 degree Celsius and 30 degree Celsius. Here thermal conductivity is given by the relation

The inner and outer surfaces of a furnace wall, 25 cm thick, are at 30

1.	The inner and outer surfaces of a furnace wall, 25 cm thick, are at 300 degree Celsius and 30 degree Celsius. Here thermal conductivity is given by the relation
A.	KJ/m hr deg
B.
C.	1355.3 kJ/m<sup>2</sup> hr
Answer» D.

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The inner and outer surfaces of a furnace wall, 25 cm thick, are at 300 degree Celsius and 30 degree Celsius. Here thermal conductivity is given by the relation

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