A-LevelPhysicsDeformation of solidsMay/June 2025Paper 1 Q211 Mark
A student has a copper wire and a steel wire with equal lengths and cross-sectional areas. The student hangs identical loads on the two wires. The extensions of the two wires are different. The student calculates the stress, strain and Young modulus of each wire. Which row identifies with a tick (√) the calculated values that are equal for both wires? [Table with columns: stress, strain, Young modulus and rows A, B, C, D. Row A: stress has tick. Row B: strain has tick. Row C: Young modulus has tick. Row D: stress and Young modulus have ticks.]
ARow A: tick under stress
BRow B: tick under strain
CRow C: tick under Young modulus
DRow D: tick under stress and Young modulus
✓ Correct Answer
The correct answer is A. 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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