(a(i))[1]
On Fig. 6.1, add two points labelled F to indicate where the principal focuses (focal points) of the lens are located.
(a(ii))[3]
On Fig. 6.1, draw two rays beginning at the image I in order to locate the object. Draw the object and label it O.
(a(iii))[1]
State one characteristic of the image formed when the object is in this position.
(b(i))[1]
On Fig. 6.2, sketch the path of the rays inside the eye to demonstrate the effect of long-sightedness.
(b(ii))[1]
A lens is being used to correct the long-sightedness. Draw a lens that is suitable for this correction.