A mitochondrion measures $15\ \text{mm}$ in a photomicrograph. Its true length is $3\ \mu\text{m}$. What magnification has the photomicrograph been taken at?
- A$\times 5$
- B$\times 45$
- C$\times 5000$
- D$\times 45000$
Biology 0610 · IGCSE · Size of specimens