Question

A convergent lens has a focal length of 10.8 cm. The object distance is 19.6 cm. Find the distance of the image from the center of the lens. Answer in units of cm. Find the magnification.

Answer 1

Given that

focal length f=10.8 cm

object distance u=19.6 cm

step;2

now we find the image distance

1/f=1/v+1/u

1/10.8=1/v+1/19.6

1/10.8-1/19.6=1/v

1/v=19.6-10.8/19.6*10.8

1/v=8.8/211.68

image distance v=24.1 cm

now we find the magneifaction

magnifaction =24.1/19.6=1.23