How do light rays behave when passing through a concave lens?

When light rays pass through a concave lens, they are refracted, causing them to diverge. A concave lens is thinner in the center than at the edges and, due to the shape of the lens, light rays entering the lens are bent away from the principal axis. As a result, the rays appear to originate from a virtual focal point on the same side of the lens as the incoming light, creating the effect of divergence. This property is key to the functioning of concave lenses, which are commonly used in various optical devices like glasses for nearsightedness, cameras, and projectors.

In contrast, a concave lens will not converge light rays or reflect them, nor does it absorb them to any significant extent. The unique refractive behavior of concave lenses makes them essential for providing clarity and focus in lenses designed for specific visual applications.