An extended object is placed at a distance of 5.0 cm from a convex lens of focal length 8.0 cm. (a) Draw the ray diagram (to the scale) to locate the image and from this, measure the distance of the image from the lens. (b) Find the position of the image from the lens formula and see how close the drawing is the correct result.

given that,

the distance between object and the lens, u = -5 cm,

focal length of the lens, f = 8 cm

using lens maker’s formula,

the image formed is erected and virtual.