Question:medium
A copper wire and a steel wire of same length and same cross-section are joined end to end to form a composite wire. The composite wire is stretched by a force. The ratio of elongation in copper to steel is ($Y_{steel} = 2 \times 10^{11} \text{ Pa}, Y_{copper} = 1.1 \times 10^{11} \text{ Pa}$):
A copper wire and a steel wire of same length and same cross-section are joined end to end to form a composite wire. The composite wire is stretched by a force. The ratio of elongation in copper to steel is ($Y_{steel} = 2 \times 10^{11} \text{ Pa}, Y_{copper} = 1.1 \times 10^{11} \text{ Pa}$):
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For the same stress, the material with a lower Young's Modulus will elongate more.
Updated On: Apr 8, 2026
- 1.1 : 2
- 2 : 1.1
- 1 : 1
- 4 : 1.1
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The Correct Option is B
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