A-LevelPhysicsForces, density and pressureOct/Nov 2022Paper 1 Q151 Mark
A solid cube is floating in equilibrium in liquid mercury. The cube is made of iron of density 7900 kg m⁻³. The cube floats with 42% of its volume above the surface of the mercury. What is the density of the mercury?
A3300 kg m⁻³
B4600 kg m⁻³
C14000 kg m⁻³
D19000 kg m⁻³
✓ Correct Answer
The correct answer is C. This question tests the candidate's understanding of forces, density and pressure 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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