A-LevelPhysicsPhysical quantities and units9702/12 · Oct/Nov 2014 · Q41 Mark

A steel wire is stretched in an experiment to determine the Young modulus for steel. The uncertainties in the measurements are given below. What is the percentage uncertainty in the Young modulus?

A1.3%

B1.8%

C4.7%

D6.2%

✓ Correct answer

D: 6.2%

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Topic: Physical quantities and units, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Oct/Nov 2014 Paper 1 Variant 2, question 4.

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