Question detail
Which option best applies limit of proportionality for Stretching and deformation in AQA GCSE Physics Forces?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Forces and elasticity
Question
- A. It undergoes permanent deformation — graph focus for limit of proportionality
- B. This confuses elastic and plastic deformation and does not answer Stretching and deformation.
- C. This is too vague because it does not use the force or motion quantity named in the objective.
- D. This reverses the physical cause and effect for Forces and elasticity.
Answer
The correct answer is: It undergoes permanent deformation — graph focus for limit of proportionality
Explanation
The correct option is It undergoes permanent deformation — graph focus for limit of proportionality. It undergoes permanent deformation — graph focus for limit of proportionality is correct because it matches the approved learning objective to describe what happens when an object is stretched beyond the limit of proportionality. This answer belongs to Stretching and deformation within Forces and elasticity, so it must use precise AQA GCSE Physics forces and motion vocabulary. The other options are wrong because they either confuse elastic and plastic deformation, omit the required force or motion condition, or move away from the exact subtopic being tested.
Common mistake
Misunderstanding Limit of Proportionality
Students often think that once an object is stretched beyond the limit of proportionality, it will return to its original shape.
Clarify that beyond the limit of proportionality, the object undergoes inelastic deformation and does not return to its original shape.
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