Physics 9702 · AS & A Level · Errors and uncertainties

Errors and uncertainties — practice question

The actual diameter of a copper pipe is $42.03\ \text{mm}$. A builder measures the pipe’s diameter five times using digital calipers. The readings are given below: $48.01\ \text{mm}$ $47.99\ \text{mm}$ $48.01\ \text{mm}$ $48.00\ \text{mm}$ $47.99\ \text{mm}$ Which statement best describes the builder’s measurements?

  • Aaccurate and precise
  • Baccurate but not precise
  • Cnot precise and not accurate
  • Dprecise but not accurate

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