Heat TransferHard
Question
One end of a thermally insulated rod is kept at a temperature T1 and the other at T2. The rod is composed of two sections of lengths l1 and l2 and thermal conductivities k1 and k2 respectively. The temperature at the interface of the two sections is
Options
A.(k2l2T1 + k1l1T2)/(k1l1 + k2l2)
B.(k2l1T1 + k1l1T2)/(k2l1 + k1l2)
C.(k1l2T1 + k1l1T2)/(k1l2 + k2l1)
D.(k1l1T1 + k2l2T2)/(k1l1 + k2l2)
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