Physics (AS & A Level) · May / June 2019 · Paper 12 · Question 5

A student wishes to determine the density ρ of lead. She measures the mass and diameter of a small sphere of lead: mass = (0.506 ± 0.005) g diameter = (2.20 ± 0.02) mm. What is the best estimate of the percentage uncertainty in her calculated value of ρ?

1. A1.7%
2. B1.9%
3. C2.8%
4. D3.7%

As printed in the paper