Physics (AS & A Level) · Feb / March 2025 · Paper 12 · Question 19
9702Elastic and plastic behaviour
A wire is extended by a tensile force so that its deformation is elastic. What is meant by elastic deformation?
- AThe extension of the wire is proportional to the tensile force.
- BThe extension of the wire is not proportional to the tensile force.
- CWhen the tensile force is removed, the wire does not return to its original length.
- DWhen the tensile force is removed, the wire returns to its original length.
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Correct answer: D. When the tensile force is removed, the wire returns to its original length.
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