Physics (AS & A Level) · Oct / Nov 2025 · Paper 13 · Question 23
9702Elastic and plastic behaviour
The diagram shows a force–extension graph for a rubber band as the band is extended and then the stretching force is decreased to zero. What can be deduced from the graph?
- AThe rubber band does not return to its original length when the force is decreased to zero.
- BThe rubber band obeys Hooke's law for the extensions shown.
- CThe rubber band remains elastic for the extensions shown.
- DThe shaded area represents the work done in extending the rubber band.
As printed in the paper
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Correct answer: C. The rubber band remains elastic for the extensions shown.
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