Question

1. Which parts of the eye cause rays of light to converge on the retina?
2. Which part causes the greatest convergence?
3. Which part brings the image into sharp focus on the retina? How does it do this?

Answer 1

1. The cornea and the eye lens are the parts of the eye that cause rays of light to converge on the retina.
2. The cornea is the part of the eye that causes the greatest convergence because light first enters the eye through the cornea, which is convex.
3. The eye lens is the part of the eye that brings images into sharp focus on the retina. The eye lens changes its thickness and converging power to focus the images of nearby and distant objects on the retina.