A mitochondrion measures $15\,\text{mm}$ on a photomicrograph. Its real length is $3\,\mu\text{m}$. Calculate the magnification of the photomicrograph.
- A$\times 5$
- B$\times 45$
- C$\times 5000$
- D$\times 45\,000$
Biology 0610 · IGCSE · Size of specimens