Physics 9702 · AS & A Level · Errors and uncertainties

Errors and uncertainties — practice question

The diagram shows a section of a thermometer. What is the correct thermometer reading, and what is the uncertainty in this reading?

  • Areading $24\,^{\circ}\text{C}$, uncertainty $\pm 1\,^{\circ}\text{C}$
  • Breading $24\,^{\circ}\text{C}$, uncertainty $\pm 0.5\,^{\circ}\text{C}$
  • Creading $24\,^{\circ}\text{C}$, uncertainty $\pm 0.2\,^{\circ}\text{C}$
  • Dreading $24.0\,^{\circ}\text{C}$, uncertainty $\pm 0.5\,^{\circ}\text{C}$

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