Question detail
Which option best applies force for Required practical: force and extension 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. The material obeys Hooke's law — graph focus for force
- B. This confuses elastic and plastic deformation and does not answer Required practical: force and extension.
- 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: The material obeys Hooke's law — graph focus for force
Explanation
The correct option is The material obeys Hooke's law — graph focus for force. The material obeys Hooke's law — graph focus for force is correct because it matches the approved learning objective to use the straight-line section of a force-extension graph to identify proportional behaviour. This answer belongs to Required practical: force and extension 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
Identifying Proportionality
Students often confuse the straight-line section of a force-extension graph with non-linear sections, leading to incorrect conclusions about proportional behaviour.
To fix this, students should focus on identifying the straight-line section clearly and understand that it indicates a direct proportionality between force and extension, ensuring they differentiate it from any curves present in the graph.
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