If a circular object seen in your low-power field (diameter 1 mm) occupies about 1/4 of the diameter of the field, the object's diameter is about _.
A) 2.5 µm
B) 0.25 µm
C) 250 µm
D) 25 µm

Question

Quizplus · Accepted Answer

If the object occupies about 1/4 of the diameter of the field, and the field diameter is 1 mm (1000 µm), then the object's diameter is 1000 µm / 4 = 250 µm.

If a Circular Object Seen in Your Low-Power Field (Diameter