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  1. A material P of thickness 1 mm is sandwiched between two steel slabs, as shown in the figure below. A heat flux 10 kW/m2 is supplied to one of the steel slabs as shown. The boundary temperatures of the slabs are indicated in the figure. Assume thermal conductivity of this steel is 10 W/mK. Considering one-dimensional steady state heat conduction for the configuration, the thermal conductivity (k, inW/mK) of material P is ________.
    1. 0.10 W/m.k.
    2. 1.10 W/m.k.
    3. -0.10 W/m.k.
    4. -1.10 W/m.k.
Correct Option: A

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