Magnifying Lens
It consists of a converging lens of small focal length. By keeping the object close to the lens, a virtual, erect and magnified image is obtained as shown
O = optic centre
FO = focal length
AB = object
A1B1 = image
Magnifying power is the ratio of the angle subtended by the image and the object on the eye, when both are at the least distance of distinct vision from the eye
For small angles
and image distance v = -D (distance of distant vision)
As f decreases, m increases.
