Question

What is the expression for magnification of Lens?

Answer 1

The magnification of a lens may be defined as the ratio of the size (height) of the image to the size (height) of the object. The magnification of a lens is represented by the letter 'm'.

The magnification of a lens may be defined as the ratio of the size (height) of the image to the size (height) of the object. The magnification of a lens is represented by the letter ‘m’. Thus,

m = Size of the image/Size of the object

or

m = h2/h1

Where, h2 = size of image

h1 = size of object

The magnification (m) of lens can also be calculated in terms of image distance (v) and object distance (u), if we do not know the size (height) of object and image. Thus,

m = Image distance/Object distance

m = v/u

Where, v = image distance

u = object distance

Please note that the magnification formula is applicable both in convex lenses and concave lenses. And the magnification m is positive when the image formed is virtual and erect. On the other hand, the magnification m is negative when the image formed is real and inverted.

Hope you understood.

Answer 2

Explanation:

HEYA MATE!!!

HERE IS YOUR ANSWER✌✌✌✌

MAGNIFICATION :

Magnification is the relative extent to the size of an object as compared to the object size. Magnification is represented by 'm'.

● m = v/u => h'/h

where,

v = image distance from lens

u = object distance from lens

h' = height of image

h = height of object

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