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:-

Two rods having length I_(1) and I_(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 combined rod is :

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 different wires 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 coefficient of linear expansion 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 :

Two rods of lengths L_(1) and L_(2) are made of materials whose coefficient of linear expansion are alpha_1 and alpha_2 . If the difference between the two lengths is independent of temperature.

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 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 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