Find the thermal resistance of an aluminium rod of length 20cm and area of cross section `1cm^(2)` . The heat current is along the length of the rod. Thermal conductivity of aluminium `=200Wm^(-1)K^(-1)` .

Find the thermal resistance of an aluminium rod of length 0.20 m and area of cross section 1xx10^(-4)m^(2) . The heat current is along the length of the rod. [Thermal conductivity of aluminium =200Wm^(-1)K^(-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) .

A uniform steel rod of length 1m and area of cross section 20 cm^2 is hanging from a fixed support. Find the increase in the length of the rod.

A unifrom steel rod of length 1m and area of cross-section 20 cm^(2) is hanging from a fixed support. Find the increases in the length of the rod.

The temperature difference between the ends of a rod of aluminium of length 1.0 m and area of cross section 5.0" cm"^(2) is 200^(@)C . How much heat will flow through the rod in 5 minutes ? The coefficient of thermal conductivity of aluminium is 0.2" kJ s"^(-1)" m"^(-1)" "^(@)C^(-1) .

An aluminium rod of length 1 m and a steel rod of length 2 m both having same cross-sectional area, are soldered together end-to-end. The thermal conductivity of aluminium rod and steel rod is 200 Js^(-1)m K^(-1) and 50 Js^(-1) m^(-1) K^(-1) respectively. The temperatures of the free ends are maintained at 300 K and 500 K. What is the temperature of the junction?

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 conductivity of aluminium =200Wm^(-1)C^(-1) and of copper =390Wm^(-1)C^(-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 conductivity of aluminium =200Wm^(-1)C^(-1) and of copper =390Wm^(-1)C^(-1) .

" A metal rod of area of cross section A has length L and coefficient of thermal conductivity K The thermal resistance of the rod is "

A metal rod of area of cross section A has length L and coefficient of thermal conductivity K the thermal resistance of the rod is .