Question

An object is placed 15cm from a lens of focal length 12cm,What is the magnification of the object?

Answer 1

Answer:

4

Explanation:

1/f=1/u-1/v

1/12=1/15-1/v

-1/v=1/12-1/15

-1/v=5-4/60

-1/v=-1/60

v=60

m=v/u

m=60/15

m=4