A-LevelPhysicsDeformation of solidsMay/June 2012Paper 1 Q251 Mark
A wire stretches 8 mm under a load of 60 N. A second wire of the same material, with half the diameter and a quarter of the original length of the first wire, is stretched by the same load. Assuming that Hooke's law is obeyed, what is the extension of this wire?
A1 mm
B4 mm
C8 mm
D16 mm
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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...
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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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