Question

please help me to know about lens formula and magnification​

Answer 1

Answer:

The lens formula is-

1/v -1/u= 1/f

Magnification is the ratio oh height of the image to height of the object.

m=h'/h=v/u

Answer 2

Answer:

Lens Formula =>

$\frac{1}{f} = \frac{1}{v} - \frac{1}{u}$

Magnification =>

$m \: = \frac{v}{u} = \frac{h.}{h}$

If m = +ve , then image is Virtual, erect

If m = -ve , then image is Real , inverted

If m = >1 , Image is Enlarged

If m = <1 , Image is Diminished

If m = 1 , Image is Of Same Size That of Object