A-LevelPhysicsDeformation of solidsOct/Nov 2017Paper 1 Q201 Mark
A bolt is subjected to a tensile force, as shown. [Figure showing a bolt with two sections, one with diameter 2d at X and another with diameter d at Y] The bolt has a circular cross-section. At end X the diameter is 2d. At end Y the diameter is d. What is the ratio stress at Y / stress at X?
A0.25
B0.50
C2.0
D4.0
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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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