A photograph shows the nucleus of a plant cell as measuring $2\,\text{mm}$ across. If the cell has a magnification of $\times 500$, what is the nucleus's true size?
- A$0.00002\,\text{mm}$
- B$0.004\,\text{mm}$
- C$0.04\,\text{mm}$
- D$250\,\text{mm}$
Biology 0610 · IGCSE · Size of specimens