A steel wire of cross-sectional area 3.0...

A steel wire of cross-sectional area `3.0xx10^-5m^-2` stretches by the same amount as a copper wire of cross-sectional area `4.0xx10^-5m^2` under the same load. What is the ratio of the original length of the steel wire to that of the copper wire ? Young's modulus of steel is `2.0xx10^11 Nm^-2` and that of copper is `1.0xx10^11Nm^-2`.

1:2

1:1

3:2

2:1

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