magnification and focal point

Question

A camera is equipped with a lens with a focal length of 32 cm. When an object 1.2 m (120 cm) away is being photographed, what is the magnification?

Answer 1

f=32cm

u= -120cm

v=?

use 1/v - 1/u = 1/f

plug in u and f

Get v = 120*32/88 = 43.64 cm

magnification = v/u = 43.64/120

image is inverted and diminished