What Are the Uses for Concave Lenses and Convex Lenses?
Concave lenses are used for correcting myopia or short-sightedness. Convex lenses are used for focusing light rays to make items appear larger and clearer, such as with magnifying glasses.
A concave lens contains at least one inwardly-curved surface, and it is also referred to as a divergent lens. When light rays enter a concave lens, it diverts, or spreads, the rays around because of its thinner center, causing the objects to appear smaller or farther away. A car’s side mirror is one example of a concave lens, and it often comes with the warning “objects in mirror are closer than they appear.”
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