A-LevelPhysicsDeformation of solids9702/12 · Oct/Nov 2018 · Q211 Mark

A wire has both elastic and plastic properties. When it is slowly loaded, its extension varies with load as shown by line OXY. The removal of the load is represented by line YZ. This creates areas P, Q and R on the graph. [Figure 21.1] Which area represents the maximum elastic potential energy stored in the wire?

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CQ+R

✓ Correct answer

D: R

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Topic: Deformation of solids, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Oct/Nov 2018 Paper 1 Variant 2, question 21.

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