Question

A concave mirror from an image at18 cm.when object is kept at15 cm.what is the magnification

Answer 1

The formula for magnification of a mirror goes like this ...

m = -v/u

For concave mirror ....

u = -15cm

v = -18cm

Therefore. ...m = -(-18)/(-15)

....m = -18/15

.....m = -1.2