Two separate wires A and B are stretched by 2 mm and 4 mm respectively, when they are subjected to a force of 2N. Assume that both the wires are made up of same material and the radius of wire B is  4 times that of  the radius of wire A. The length of the wires A and B are in the ratio of a:b. Then  ab  can be expressed as  1x where x is……..