In a furnace, the wall thickness is 60 cm and is 100 cm wide by 150 cm height made of material with thermal conductivity 0.4 W/mK. The temperature inside and outside are 1000°C and 4°C respectively. The thermal resistance is

In a furnace, the wall thickness is 60 cm and is 100 cm wide by 150 cm

1.	In a furnace, the wall thickness is 60 cm and is 100 cm wide by 150 cm height made of material with thermal conductivity 0.4 W/mK. The temperature inside and outside are 1000°C and 4°C respectively. The thermal resistance is
A.	1 K/W
B.	2 K/W
C.	18 K/W
D.	15 K/W
Answer» B. 2 K/W

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In a furnace, the wall thickness is 60 cm and is 100 cm wide by 150 cm height made of material with thermal conductivity 0.4 W/mK. The temperature inside and outside are 1000°C and 4°C respectively. The thermal resistance is

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