What is the temperature of the steel-copper junction in the steady state of the system shown in Fig.

What is the temperature of the steel-copper junction in the steady state of the system shown in Fig. 10.15. Length of the steel rod = 15.0 cm. length of the copper rod = 10.0 cm, temperature of the furnace = 300°C, temperature of the other end = 0 °C. The area of cross section of the steel rod is twice that of the copper rod. (Thermal conductivity of steel = 50.2 J s¹ m¹ K-¹ and of copper = 385 s'm¹ K¹).