How does the magnifiaction of a magnifying glass differ from its magnifying power ?

Principal focus of a magnifying glass is

Principal focus of a magnifying glass is

A graph sheet divided into squares each of size \mm 2 is kept at a distance of 7cm from a magnifying glass of focal length of 8cm. The graph sheet is viewed through the magnifying lens keeping the eye close to the lens. Find (i) the magnification produced by the lens, (ii) the '(irea of each square in the image formed (iii) the magnifying power of the magnifying lens. Why is the magnification found in (i) different from the magnifying power?

A magnifying glass comprises a simple

Name a few uses of magnifying glass.

A simple magnifying glass consists of a