Question

How does the shape of a lens affect the way that light travels through it?

Answers

GPT 3.5
The shape of a lens has a significant impact on the way that light travels through it.

For convex lenses - when the center is thicker than the edges - light rays passing through the lens converge towards a focal point. This is due to the fact that the different angles of the curved surface bend the light rays towards the center of the lens, causing them to converge. This convergence results in the formation of real or virtual images, depending on the position of the object relative to the lens.

For concave lenses - when the center is thinner than the edges - light rays passing through the lens diverge away from a focal point. This is because the curved surfaces of the lens cause the light rays to spread out and diverge, leading to a virtual focal point on the opposite side of the lens. This divergence results in the image appearing smaller and upright when viewed through the lens.

In summary, the shape of a lens determines how it refracts and bends light rays, ultimately affecting the way that light travels through it and how images are formed.