A lens produces a virtual image between the object and the lens.
1) Name the lens.
2) Draw a ray diagram to show the formation of this image.
Show by a ray diagram that a diverging lens cannot form a real image of an object placed anywhere on its principal axis.
Draw a ray diagram to show how a converging lens can form an image of the sun. Hence give a reason for the term ‘burning glass’ for a converging lens used in this manner.
Draw a ray diagram to show how a converging lens is used as a magnifying glass to observe a small object. Mark on your diagram the foci of the lens and the position of the eye.