An object is placed 10 cm from a lens of focal length 5 cm. Draw the ray diagrams to show the formation of image if the lens is (i) converging, and (ii) diverging.

With the help of a diagram, explain why the image of an object viewed through a concave lens appears smaller and closer than the object.

How would a pencil look like if you saw it through?

(a) A concave lens, and

(b) A convex lens? (Assume the pencil is close to the lens). Is the image real or virtual?

State one practical use each of convex mirror, concave mirror, convex lens and concave lens.

Construct ray diagrams to illustrate the formation of a virtual image using (i) a converging lens, and

(ii) A diverging lens.