STANDARD Physics Conduction MCQ Question
Three metal rods of the same material and identical in all respects are joined as shown in the figure. The temperatures at the ends are maintained as indicated. Assuming no loss of heat from the curved surfaces of the rods, the temperature at the junction X would be
45°C
60°C
30°C
20°C
Correct Answer
Detailed Explanation
At the junction X, the heat currents from Y to X and Z to X must equal the heat current from X to W. Solving the equation H₁ + H₂ = H₃ gives 3T = 180°C, so T = 60°C.
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