Physics (AS & A Level) · May / June 2022 · Paper 12 · Question 20
9702Elastic and plastic behaviour
A wire is being stretched by a tensile force. Which statement about the elastic limit must be correct?
- AThe deformation is plastic after the elastic limit has been reached.
- BThe deformation is plastic until the elastic limit is reached.
- CThe extension is proportional to the tensile force after the elastic limit has been reached.
- DThe extension is proportional to the tensile force until the elastic limit is reached.
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Correct answer: A. The deformation is plastic after the elastic limit has been reached.
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