Question

A lens forms the image of an object placed at a distance 15 cm from it, at a distance 60 cm in front of it. Find the magnification.

Answer 1

Object distance, u = -15 cm

Image distance, v = -60 cm

For a lens, magnification is

`"m" = "v"/"u"`

`therefore "m" = (-60)/-15`

∴ m = + 4