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A copper rod and a steel rod of equal cr...

A copper rod and a steel rod of equal cross -sections and lengths `(L)` are joined side by side and connected between two heat baths as shown in the figure. If heat flows through them from `x=0` to `x=2L` at a steady rate, and conductivities of the metals are `K_(cu)` & `K_("steel")(K_(cu)gtK_("steel"))`, then the temperature varies with `x` as (convention and radiation are negligible)

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