A-LevelPhysicsPhysical quantities and units9702/12 · Oct/Nov 2019 · Q51 Mark

The sides of a wooden block are measured with calipers. The lengths of the sides are measured as 20.0 mm, 40.0 mm and 10.0 mm. [Figure showing a wooden block with dimensions 20.0 mm, 40.0 mm, 10.0 mm] The calipers can measure with an absolute uncertainty of ±0.1mm. What is the percentage uncertainty in the calculated volume of the block?

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A0.3%

B1.8%

C3.8%

D30%

✓ Correct answer

B: 1.8%

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Topic: Physical quantities and units, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Oct/Nov 2019 Paper 1 Variant 2, question 5.

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