A-LevelPhysicsDeformation of solids9702/12 · May/June 2022 · Q201 Mark
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 has been reached.
✓ Correct answer
A: The deformation is plastic after the elastic limit has been reached.
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