The diagram shows a cross-section through a human eye. retina Light from an object is refracted by the cornea and lens to form an image on the retina. The shape of the lens is altered by muscles in the eye to allow images of objects at different distances to be focused on the retina. The closest position at which people can clearly,r see an object is called the near point. The eye may,r be modelled as a sphere with a single thin lens as shown. The distance from the centre of the lens to the retina is 2.0 cm. (a) {i} 1When the eye of a It] year-old child is focused on an object that is at the near point. the focal lengdi is 1.5 cm. Complete a ray diagram to scale, on the grid below, to determine the distance to the near point for the child. {3)