An iron wire an copper wire having same length and cross-section are suspended form same roof Young's modulus of copper is `1//3rd` that of iron. Then the ratio of the weighs to be added at their ends so that their ends are at the same level is

An iron wire and copper wire having same length and cross-section are suspended from same roof Young.s modulus of copper is 1/3rd that of iron. Then the ratio of the weights to be added at their ends so that their ends are at the same level is

Two wires have identical lengths and areas of cross-section are suspended by mass M . Their Young's modulus are in the ratio 2:5 .

Two wires have identical lengths and areas of cross-section are suspended by mass M . Their Young's modulus are in the ratio 2:5 .

Two wires A and B have the same length and area of cross-secton. But Young's modulus of A is two times the Young's modulus of B. Then the ratio of force constant of A to that of B is

The ratio of the lengths of the two wires of same Young's modulus and same diameter is 5:3 . They are stretched by the same force. Then the ratio of the work done on the two wires to stretch is

A piece of copper wire has twice the radius of a piece of steel wire. Young's modulus for steel is twice that of the copper. One end of the copper wire is joined to one end of the steel wire so that both can be subjected to the same longitudinal force. By what fraction of its length will the steel have stretched when the length of the copper has increased by 1% ?

A piece of copper wire has twice the radius of a piece of steel wire. Young's modulus for steel is twice that of the copper. One end of the copper wire is joined to one end of the steel wire so that both can be subjected to the same longitudinal force. By what fraction of its length will the steel have stretched when the length of the copper has increased by 1% ?

A piece of copper wire has twice the radius of a piece of steel wire. Young's modulus for steel is twice that of the copper. One end of the copper wire is joined to one end of the steel wire so that both can be subjected to the same longitudinal force. By what fraction of its length will the steel have stretched when the length of the copper has increased by 1% ?