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Metal slab is made up of two parallel si...

Metal slab is made up of two parallel side plates of metal A and metal B of thickness 0.6 cm and 0.4 cm respectively. Their respective thermal conductivities are 2.268 and 1.008 SI unit. The outer surface of the plate A is at `220^@` and that of plate B at `20^@`. Find the temperature of the interface .

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