Two thin rods of length I and 12 at a certain temperature

Last updated: 6/10/2023

Two thin rods of length I and 12 at a certain temperature are joined to each other end to end The composite rod is then heated through a temperature The coefficients of linear expansion of the two rods are a and a respectively Then the effective coefficient of linear expansion of the composite rod is A A A 2 B a az C 1 1 0 1 1 D 1 0 10 1 1