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# Two wires of equal cross-section but one made of steel and the other of copper are joined end to end. When the combination is kept under tension, the elongations in the two wires are found to be equal. What is the ratio of the lengths of the two wires? (Given : steel =

- 2 : 11
- 11 : 2
- 20 : 11
- 11 : 20

## The correct answer is: 20 : 11

Since, cross-sections are equal and same tension exists in both the wires, therefore, the stresses developed are equal.

Also, is given to be the same for both the wires.

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