A-LevelPhysicsDeformation of solidsOct/Nov 2015Paper 1 Q211 Mark
A force acts on a wire to produce extension e. The same force then acts on a second wire of the same material, but of half the diameter and three times the length of the first wire. Both wires obey Hooke's law. What is the extension of the second wire?
A3e
B4e
C6e
D12e
✓ 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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