Question

A microscopes field of view is 2mm in diameter. 1mm is equal to 1000 micrometers (µm). When viewing onion skin cells under this microscope 10 cells could be seen to fill the field of view lengthwise.
Express the diameter of the field of view in µm.

Answer 1

2 mm = 2 mm * 1000 µm / 1 mm = 2 * 1000 = 2000 µm