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Two metal cubes A and B of same size are...

Two metal cubes A and B of same size are arranged as shown in figure. The extreme ends of the combination are maintained at the indicated temperature. The arrangement is thermally insulated. The coefficients of thermal conductivity of A and B are `300W//m^@C` and `200W//m^@C`, respectively. After steady state is reached, the temperature t of the interface will be________.

Text Solution

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In steady state, rate of flow of heat through `A=` rate of flow of heat through B.
or `K_1A((100-T)/(x))=K_2A((T-0))/(x)` or `300-3T=2T`
`:. T=60^@C`
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