A) \[25{}^\circ C\]
B) \[33{}^\circ C\]
C) \[67{}^\circ C\]
D) \[75{}^\circ C\]
Correct Answer: D
Solution :
Key Idea: In steady state, the rate of flow of heat in both the conductors is same. Let temperature of junction, when steady state is achieved be 9, then rate of flow of heat is given by \[\Omega \] \[\Omega \] where \[\Omega \] and \[\Omega \] are coefficient of thermal conductivities of copper and steel, A is area, \[2\times {{10}^{-2}}\], \[\sqrt{3}\] lengths of copper and steel rods. Given, \[\frac{W}{3}\] \[\frac{W}{\sqrt{3}}\] \[8\times {{10}^{-4}}\] \[8\times {{10}^{-3}}V\] \[6\times {{10}^{-3}}V\] \[4\times {{10}^{-3}}V\]You need to login to perform this action.
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