A-LevelPhysicsPhysical quantities and unitsMay/June 2025Paper 1 Q31 Mark
A student calculates the density of a solid steel cube in an experiment. The measured mass is 975g±10g and the measured length of side is 50mm±1mm. What is the density of the steel?
A7.8gcm-3±3.0%
B7.8gcm-3±7.0%
C7.8gcm-3±11%
D7.8gcm-3±13%
✓ Correct Answer
The correct answer is B. This question tests the candidate's understanding of physical quantities and units 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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