Question

Define magnification of lens

Answer 1

Magnification of a lens. Lenses give an image of the object. The size of the image compared with the object depends on the magnification of the lens. The magnification of a lens is defined as: In spite of what you might think magnifications don't always have to be bigger than one.

Answer 2

Magnification of a lens is defined as the ratio of the height of image to the height of object. It is also given in terms of image distance and object distance. It is equal to the ratio of image distance to that of object distance.....

Here,
m = h1/ h2
m = v/u

Where,
m= magnification.

h1= height of image.

h2= height of object.