Physics 9702 · AS & A Level · Errors and uncertainties

Errors and uncertainties — practice question

A school uses a sheet of aluminium in radioactivity experiments. Its thickness is labelled as $3.2\,\text{mm}$. A student chooses to verify this value. He has vernier calipers that measure to $0.1\,\text{mm}$ and a micrometer that measures to $0.01\,\text{mm}$. Which statement must be correct?

  • AThe micrometer gives a more accurate measurement.
  • BThe micrometer gives a more precise measurement.
  • CThe vernier calipers give a more accurate measurement.
  • DThe vernier calipers give a more precise measurement.

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