Two rods, one of aluminium and the other made of steel, having initial length `l_1 and l_2` are connected together to from a single rod of length `l_1+l_2.` The coefficients of linear expansion for aluminium and steel are `alpha_a and alpha_s` and respectively. If the length of each rod increases by the same amount when their temperature are raised by `t^0C,` then find the ratio `l_1//(l_1+l_2)`

Two rods, one of aluminum and the other made of steel, having initial length l_1 and l_2 are connected together to form a single rod of length l_1 + l_2 . The coefficients of linear expansion for aluminum and steel are alpha_a, and alpha_s, respectively. If the length of each rod increases by the same amount when their temperature are raised by t^@C , then find the ratio l_1/(l_1 + l_2)

Two rods, one of aluminium and other made of steel, having initial lengths l_(1) and l_(2) are connected together to form a single rod of length (l_(1)+l_(2)) . The coefficient of linear expansions for aluminium and steel are alpha_(a) and alpha_(s) respectively. If length of each rod increases by same amount when their tempertures are raised by t^(@)C , then find the ratio l_(1) / (l_(1)+l_(2)) .

Two rods, one of aluminium and other made of steel, having initial lengths l_(1) and l_(2) are connected together to form a single rod of length (l_(1)+l_(2)) . The coefficient of linear expansions for aluminium and steel are alpha_(a) and alpha_(s) respectively. If length of each rod increases by same amount when their tempertures are raised by t^(@)C , then find the ratio l_(1) (l_(1)+l_(2)) .

Two rods, one of aluminium and other made of steel, having initial lenghts l_(1) and l_(2) are connected together to form a singel rod of length (l_(1)+l_(2)) . The coefficient of linear expansions for aluminium and steel are alpha_(a) and alpha_(s) respectively. If length of each rod increases by same amount when their tempertures are raised by t^(@)C , then find the ratio l_(1) (l_(1)+l_(2)) .

Two rods one of aluminium and the other made of steel having initial length l_(1) and l_(2) are connected together to form a single rod of length l_(1) + l_(2) . The co - efficient of linear expansion for aluminium steel are a_(a) and alpha_(a) respectively . If the length of each rod increases by ghe same amount when their temeperature are raised by + .^(@)C then find the ratio (l_(1))/(l_(1)+ l_(2))

Two rods , one of aluminium and the other made of steel, having initial length l_(1) and l_(2) are connected together to from a sinlge rod of length l_(1)+l_(2) . The coefficient of linear expansion for aluminium and steel are alpha_(a) and alpha_(s) for AC and BC . If the distance DC remains constant for small changes in temperature,

An aluminium rod of length l_(1) and an iron rod of length l_(2) are joined lengthwise to form a single rod of length (l_(1)+l_(2)) . Coefficients of linear expansion of aluminium and iron are alpha_(a) " and " alpha_(s) respectively. If both the rods expand equally for a rise in temperature t find the ratio between l_(1) " and " (l_(1)+l_(2)) .

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

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.

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.