A-LevelPhysicsDeformation of solidsFeb/Mar 2021Paper 1 Q201 Mark
A wire is stretched by applying increasing values of force F. For each value of force applied, the extension x is recorded. A force-extension graph is plotted from the data obtained. Which statement about the area under the graph must be correct?
AIt can be calculated as ½Fx.
BIt is the elastic potential energy stored in the stretched sample.
CIt is the work done in stretching the sample.
DIt would be the same for any wire of the same material.
✓ Correct Answer
The correct answer is C. This question tests the candidate's understanding of deformation of solids within the Physicssyllabus. The examiner's mark scheme requires...
📋 Examiner Report & Trap Analysis
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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