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 uniform metal rods of length L_(1)andL_(2) and their linear coefficients of expansion alpha_(1)andalpha_(2) respectively, are connected to form a single rod of length (L_(1)+L_(2)) . When the temperature of the combined rod is raised by '' t^(@)C '', the length of each rod increased by the same amount then [(alpha_(2))/(alpha_(1)+alpha_(2))] 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 uniform metal rods one of aluminium of length l_(1) and another made of steel of length l_(2) and linear coefficients of expansion alpha_(a) and alpha_(s) respectively are connected to form a single rod of length (l_(1) + l_(2)) , When the temperature of the combined rod is raised by t^(@)C , the length of each rod increases by the same amount then (l_(l))/(l_(1) + l_(2)) is

There are two rods of length l_1 and 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