Biology 0610 · IGCSE · Size of specimens

Size of specimens — practice question

The photograph depicts a limpet. On the image, line PQ measures 65 mm. The image is magnified by $\times 2.5$. Calculate the actual diameter of the limpet along line PQ.

  • A2.6 mm
  • B19.5 mm
  • C26 mm
  • D195 mm

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