A page of printed text is positioned 18 cm in front of a converging lens with focal length 35 cm. Fig. 6.1 presents the arrangement as a scale diagram, and both principal focuses (focal points) of the lens are marked F.
(a(i))[3]
Draw on Fig. 6.1 to show the image of the page formed by the lens, and label it I.
(a(ii))[2]
Use Fig. 6.1 to find the actual distance of image I from the lens.
(b)[1]
State whether the image formed when a lens is used as a magnifying glass is real or virtual. Explain why.
(c)[2]
Suggest how a person who is long-sighted may benefit from using a converging lens.
Worked solution & mark scheme
This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Ray parallel to axis refracted through focal point” …