The table shows how the thickness of the lens of the eye changes when focussing on an object at different distances from the front of the eye. distance from eye/cm | thickness of lens/mm ---|--- 10 | 4.0 20 | 3.6 30 | 3.2 50 | 2.9 100 | 2.7 150 | 2.6 200 | 2.6

1. (a)(i)Describe the pattern shown by the data in the table.[2]
2. (a)(ii)Explain how named components of the eye change the thickness of the lens when focussing on an object as it moves further from the front of the eye.[4]
3. (b)As a person becomes older, the lens of the eye becomes harder and less elastic. This results in the person seeing an image of a close object that is out of focus. [Figure: Diagram showing light refraction in the eye with object and image] The diagram below shows how light is refracted by two types of artificial lens that may be used to manufacture spectacles (glasses). [Figure: Convex lens refracting light, Concave lens refracting light] Suggest and explain which type of lens would be most suitable for this older person.[3]

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.