The external surface of a wall of 3 m height, 5 m width and 0.5 m thic – McqOptions

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1.	The external surface of a wall of 3 m height, 5 m width and 0.5 m thickness is at a temperature of 2°C. If a heat loss of 150 W from the room is measured across the wall, find the inner wall temperature? The thermal conductivity of wall material can be taken as 1 W/m.K
A.	280 K
B.	285 K
C.	268 K
D.	282 K
Answer» B. 285 K

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