Question

Find the maximum magnifying power of a compound Microscope having a 25 diopter lens as the objective, a 5 diopter lens as the eyepiece and the separation 30 cm between the two lenses. The least distance for clear vision is 25 cm.

Answer 1

For the given compound microscope

D = 25 cm, separation between objective and eyepiece = 30 cm The magnifying power is maximum when the image is formed by the eye piece at least distance of clear vision i.e. D = 25 cm