A-LevelPhysicsPhysical quantities and unitsMay/June 2018Paper 1 Q11 Mark
A sheet of gold leaf has a thickness of 0.125 µm. A gold atom has a radius of 174 pm. Approximately how many layers of atoms are there in the sheet?
A4
B7
C400
D700
✓ Correct Answer
The correct answer is C. 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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