It consist of two convex lenses. These lenses are called

object glass and eye piece respectively. A real, inverted

and diminished object is formally the object at its focus.

This image lies with the focus of the eye piece which acts

as a magnifying galss, producing a virtual, erect, enlarged

image of it. The first image this seen is magnified, but

inverted with respect to the object.

Magnigying power = F/f

Where F is focal length of object glass, and f is focal

length of eye-piece.