Physics (AS & A Level) · May / June 2026 · Paper 12 · Question 20
9702Elastic and plastic behaviour
What is meant by elastic deformation of a wire under tension?
- Adeformation for which the elastic potential energy is proportional to the extension
- Bdeformation for which the extension is proportional to the tensile force
- Cdeformation for which the extension remains constant as the tensile force is removed
- Ddeformation for which the extension returns to zero when the tensile force is removed
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Correct answer: D. deformation for which the extension returns to zero when the tensile force is removed
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