A large cylindrical rod of length L is made by joining two identical r – McqOptions

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1.	A large cylindrical rod of length L is made by joining two identical rods of copper and steel of length I- each. The rods are completely insulated from the surroundings. If the free end of copper rod is maintained at \[100{}^\circ C\]band that of steel at \[9{}^\circ C\]then the temperature of junction is (Thermal conductivity of copper is 9 times that of steel)
A.	\[99{}^\circ C\]
B.	\[59{}^\circ C\]
C.	\[19{}^\circ C\]
D.	\[67{}^\circ C\]
Answer» B. \[59{}^\circ C\]

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