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Statement I: Two solid cylindrical rods ...

Statement I: Two solid cylindrical rods of identical size and different thermal conductivity `K_1` and `K_2` are connected in series. Then the equivalent thermal conductivity of two rods system is less than that value of thermal conductivity of either rod.
Statement II: For two cylindrical rods of identical size and different thermal conductivity `K_1` and `K_2` connected in series, the equivalent thermal conductivity K is given by `(2)/(K)=(1)/(K_1)+(1)/(K_2)`

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