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Physics (AS & A Level) · Oct / Nov 2025 · Paper 14 · Question 21

9702Elastic and plastic behaviour

The graph shows the variation in extension with force for a sample of rubber. The top line shows the variation in extension as a force is applied. The bottom line shows the variation in extension as the force is removed. What is represented by the area between the two lines?

  1. Athe work done as the force is applied
  2. Bthe work done as the force is applied minus the work done as the force is removed
  3. Cthe work done as the force is removed
  4. Dthe work done as the force is removed plus the work done as the force is applied

As printed in the paper

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Correct answer: B. the work done as the force is applied minus the work done as the force is removed

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