A composite bar of length `L=L_(1)+L_(2)` is made from a bar of material 1 and length `L_(1)` attached to a bar of material 2 and length `L_(2)`. Find the effective linear expansion `alpha` of this bar.The coefficinets of linear expansion of the material of the rods are `alpha_(1)` and `alpha_(2)` respectively.

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 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

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 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 together. The equivalent coefficients of linear expansion for the obtained rod:-

Two metal rods of lengths L_(1) and L_(2) and coefficients of linear expansion alpha_(1) and alpha_(2) respectively are welded together to make a composite rod of length (L_(1)+L_(2)) at 0^(@)C. Find the effective coefficient of linear expansion of the composite 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 :