Two wires of different materials each of length `l` and cross sectional area 'A' are joined in series to form a composite wire. If their young's moduli are Y and 2Y, the total elongation produced by applying a force F to stretch the composite wire will be

A wire of length L and cross-sectional area A is made of a material of Young's modulus Y. IF the wire is stretched by an amount x, the workdone is

A wire of length 'L' and cross sectional area 'A' is made up of a material of young's modulus 'Y'. If the wire is stretched by 'X' the work done is

A wire of length L, density rho and young's modulus Y produces an elongation 1 in wire by applying load, then frequency of wire is

A wire of length L and cross sectional area A is made of a material of Young's modulus Y. If the wire is streched by an amount x, the work done is………………

A wire of length L and cross sectional area A is made of a material of Young's modulus Y. If the wire is streched by an amount x, the work done is………………

A copper wire and a steel wire of the same length and same cross-section are joined end to end to form a composite wire. The composite wire is hung form a rigid support and a load is suspended form the other end. If the increses in length of the composite wire is 2.4mm . then the increases in lenghts of steel and copper wires are