The figure show a cross-sectionof a doubleglass unit ofa windowon a vertical wall. A graphwall. A graph of thetemperatureat different pointswithin the unit isshow nextto it. The temperaturedifferenceacrosstheunit is 13 K. Ithas acrossp-sectionalarea of1.3m^(2)and the rate ofheat flow throughit is 65 W. Then the correctstatementis (Glasshas a thermal conductivity of 1 W m^(-1) K^(-1))

The figure show a cross-sectionof a doubleglass unit ofa windowon a ve

1.	The figure show a cross-sectionof a doubleglass unit ofa windowon a vertical wall. A graphwall. A graph of thetemperatureat different pointswithin the unit isshow nextto it. The temperaturedifferenceacrosstheunit is 13 K. Ithas acrossp-sectionalarea of1.3m^(2)and the rate ofheat flow throughit is 65 W. Then the correctstatementis (Glasshas a thermal conductivity of 1 W m^(-1) K^(-1))
Answer» The unitis in steady state andin thermalequilibrium The UNIT is insteadystate but not in thermalequalibrium. The unit is not in STEADYSTATE butis in thermal The unitneitherin steadystate nor in thermal equilibrium Solution :TEMPERATURE is not same every where so unit is not in thermal equilibrium but heat is FLOWING at CONSTANT rate.