What is magnification in the below diagram?
If OA = 10 cm and O’A’ = 2 cm?
Let's take the height of the image as h′ and height of the object as h, image distance from the pole as v and object distance from the pole as u.
Magnification=height of imageheight of object and magnification can also be expressed in the form of image distance from the pole and object distance from the pole.
Magnification=−image distanceobject distance.
So, Magnification=h′h=−vu
Magnification=−210 (using the sign conventions)
=−15
The negative sign in magnification shows that the image formed is real.