Two rods having length `l_1` and `l_2`, made of materials with the linear expansion coefficient `alpha_1` and `alpha_2`, were soldered together. The equivalent coefficient of linear expansion for the obtained rod is

Two rods having length l_(1) and l_(2) , made of materials with the linear coefficient of expansion alpha_(1) and alpha_(2) were welded togther. The equivalent coefficients of linear expansion for the obtained rod:-

There are two rods of length l_1 l_2 and coefficient of linear expansions are alpha_1 and alpha_2 respectively. Find equivalent coefficient of thermal expansion for their combination in series.

Two rods of lengths L_(1) and L_(2) are welded together to make a composite rod of length (L_(1)+L_(2)) . If the coefficient of linear expansion of the materials of the rod are alpha_(1) and alpha_(2) respectively. The effective coefficient of linear expansion of the composite rod is

Two different wirese having lengths L_(1) and L_(2) and respective temperature coefficient of linear expansion alpha_(1) and alpha_(2) are joined end - to - end . Then the effective temperature coeficient of linear expansion is :

If two rods of length L and 2L having coefficients of linear expansion alpha and 2alpha respectively are connected so that total length becomes 3L, the average coefficient of linear expansion of the composite rod equals

A meter-scale is made of copper and iron rods as shown in the figure. If the length of copper rod is lambda meter and the coefficients of linear expansion of copper and iron are a_(1) and a_(2) respectively, then the equvalent coefficient of linear expansin of the combined material of the meter-scale is

A composite bar of length L = L_(1) + L_(2) is made up from a rod of material 1 and of length L_(1) attached to a rod of material 2 and of length L_(2) as shown. If alpha_(1) and alpha_(2) are their respective coefficient of linear expansion, then equivalent coefficient of linear expansion for the composite rod is

Two rods of length l_(1) and l_(2) are made of material whose coefficient of linear expansion are alpha_(1) and alpha_(2) , respectively. The difference between their lengths will be independent of temperatiure if l_(1)//l_(2) is to

Two metallic rods of length l and 3l have coefficient of linear expansion alpha and 3alpha respectively. The coefficient of linear expansion ofr their series combinations, is

Two rods of lengths l_(1) and l_(2) are made of materials having coefficients of linear expansion alpha_(1) and alpha_(2) respectively. What could be the relation between above values, if the difference in the lengths of the two rods does not depends on temperature variation?