Physics (AS & A Level) · May / June 2025 · Paper 12 · Question 23
9702Elastic and plastic behaviour
Which phrase describes the strain at the elastic limit on a stress–strain graph?
- Athe maximum strain below which Hooke's law is obeyed
- Bthe maximum strain below which the deformation is plastic
- Cthe minimum strain above which Hooke's law is obeyed
- Dthe minimum strain above which the deformation is plastic
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Correct answer: D. the minimum strain above which the deformation is plastic
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