What is the temperature of the steel-copper junction in the steady state system show in Fig. `7(e).17`? Length of steel rod = 15.0 cm, length of the copper rod = 10.0 cm, temperature of the furnace `=300^(@)C`, temperature of other end `0^(@)C`. The are of cross-section of the steel rod is twice that of the copper rod. (Thermal conductivity of steel `=50.2 js^(-1) m^(-1) K^(-1)` and of copper `=3895 js^(-1) m^(-1) K^(-1)`).

What is the temperature of steel-copper jumction in the steady state of the system shown in fig. Length of the steel rod = 30.0 cm, length of the copper rod = 20.0 cm, temperature of the furnace = 300^(@)C , temperature of cold 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 Js^(-1) m^(-1) .^(@)C^(-1) and of copper = 358 Js^(-1) m^(-1) .^(@)C^(-1) .

What is the temperature of the steel -copper junction in the steady state of the system shown in the figure. Length of the steel rod =25cm , length of the copper rod =50cm , temperature of the furance =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 =50Js^(-1)m^(-1)K^(-1) and of copper =400 J s^(-1)m^(-1)K^(-1) )

What is the temperature of the steel copper junction in the steady state of the system shown if Fig. Length of the steel rod =25cm , length of the copper rod =50cm , 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 =50J//s//m and of copper =400Js//m//K ).

A rod of 1m length and area of cross-section 1cm^(2) is connected across two heat reservoirs at temperature 100^(@)C and 0^(@)C as shown. The heat flow per second through the rod in steady state will be [Thermal conductivity of material of rod =0.09kilocalm^(-1)s^(-1)('^(@)C) ]

The ends of copper rod of length 1m and area of cross section 1cm^(2) are maintained at 0^(@)C and 100^(@)C . At the centre of rod, there is a source of heat of 32W . The thermal conductivity of copper is 400W//mK

A steel bar 10.0 cm long is welded end to end to a copper bae 20.0 cm long. Both bars are insulated perfectly on their sides . Each bar has a separate cross-section, 2.00 cm on a side . The free end of the steel bar is maintained at 100^(@)C by placing it in contact with ice . find the temperature at the junction of the two bars and the total rate of heat flow . thermal conductivity of steel = 50.2 Wm^(-1)K^(-1) .thermal conductivity of copper =385 Wm^(-1)K^(-1) .

An aluminium rod and a copper rod of equal length 1.0 m and cross-sectional area. 1cm^(2) are welded together as shown in figure. One end is kept at a temperature of 20^(@)C and the other at 60^(@)C Calculate the amount of heat taken out per second from the hot end. thermal conuctivity of aluminium =200Wm^(-1) ^(@)C^(-1) and of copper =390Wm^(-1) ^(@)C^(-1) .

Calculate the thermal resistance of an aluminium rod of length 20cm and area of cross-section 4cm^(2) . The thermal conductivity of aluminium is 210Js^(-1)m^(-1)K^(-1) .

Figure shows a copper rod joined to a steel rod. The rods have equal length and and the equal cross sectional area. The free end of the copper rod is kept at 0^(@)C and that of the steel rod is kept at 100^(@)C . Find the temperature at the junction of the rods. conductivity of copper =390WM^(-1) ^(@)C^(-1) and that of steel =46Wm^(-1) (@)C^(-1) .