A-LevelPhysicsDeformation of solidsFeb/Mar 2019Paper 1 Q191 Mark
A metal wire, fixed at one end, has length l and cross-sectional area A. The wire extends a distance e when mass m is hung from the other end of the wire. What is an expression for the Young Modulus E of the metal?
Aml / Ae
Bmgl / Ae
Cme / Al
Dmge / Al
✓ Correct Answer
The correct answer is B. 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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