You are given two converging lenses to build a compound microscope. Lens A has focal length 0.50 cm and lens B has focal length of 3.0 cm. Which of the two lenses would you use for the objective?
A) Lens A, because it has the shorter focal length.
B) Lens B, because it has the longer focal length.
C) It makes no difference which lens I use for the objective.
D) None, because the objective should be a diverging lens.

Question

Quizplus · Accepted Answer

In a compound microscope, the objective lens should have a short focal length to provide a high magnification. Lens A, with a focal length of 0.50 cm, is suitable for the objective.

You Are Given Two Converging Lenses to Build a Compound