Question

A lens of focal length 15.0 cm is held 10.0 cm from a page (the object ). Find the magnification .

Answer 1

3.00 - Magnification.

Now this is REALLY helpful ( I hope)

Image distance :

-30.0

It is CORRECT FOR ACELLUS!

I wish you luck!

Answer 2

Magnification, m = 3

Step-by-step explanation:

It is given that,

Focal length of the lens, f = 15 cm

Object distance, u = -10 cm

Lens formula :

`(1)/(v)-(1)/(u)=(1)/(f)`

v is image distance

`(1)/(v)=(1)/(f)+(1)/(u)\\\\(1)/(v)=(1)/(15)+(1)/((-10))\\\\v=-30\ cm`

Magnification,

`m=(v)/(u)\\\\m=(-30)/(10)\\\\m=3`

So, the magnification of the lens is 3.