A-LevelPhysicsDeformation of solidsOct/Nov 2018Paper 1 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?
AP
BQ
CQ+R
DR
✓ Correct Answer
The correct answer is D. This question tests the candidate's understanding of deformation of solids within the Physicssyllabus. The examiner's mark scheme requires...
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Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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