Question detail
Which option best applies extension for Hooke's law and spring constant 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. Divide by 100 — definition focus for extension
- B. This confuses elastic and plastic deformation and does not answer Hooke's law and spring constant.
- 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: Divide by 100 — definition focus for extension
Explanation
The correct option is Divide by 100 — definition focus for extension. Divide by 100 — definition focus for extension is correct because it matches the approved learning objective to convert extension between centimetres and metres where required. This answer belongs to Hooke's law and spring constant 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
Common Mistake in Unit Conversion
Students often forget to convert extension from centimetres to metres when using the elastic potential energy equation.
Always convert extension to metres by dividing the length in centimetres by 100 before substituting into the equation.
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