Use ray behaviour and screen tests to identify virtual images, explaining how diverging rays appear to come from an image without actually meeting there.
A page of printed text is placed 18 cm from a converging lens of focal length 35 cm .
Fig. 6.1 is a scale diagram of the arrangement with each of the two principal focuses (focal points) of the lens labelled F .
Fig. 6.1
Converging lenses can be used as magnifying glasses.
State whether the image produced when a lens is used as a magnifying glass is real or virtual. Explain why.