Physics (AS & A Level) · Oct / Nov 2024 · Paper 12 · Question 3
A solid bar has a square cross-section. Its length is measured as 50.0 ± 0.2 cm and its width is measured as 2.00 ± 0.01 cm. These values are used to calculate the volume of the bar. What is the percentage uncertainty in the calculated volume?
- A± 0.21%
- B± 0.22%
- C± 0.90%
- D± 1.4%
As printed in the paper
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Correct answer: D. ± 1.4%
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