Figure shows a copper rod joined to a steel rod. The rods have equal length and equal cross-sectional area. The free end of the copper rod is kept at 0°C and that of steel rod is kept at 100°C. Find the temperature of the junction of the rod.
Conductivity of copper = \( 390 \, \text{W/m°C} \)
Conductivity of steel = \( 46 \, \text{W/m°C} \)
