Lens Theory

Lens Theory in geometrical optics studies how lenses bend light to form images. A lens is made of transparent material and can either converge (convex lens) or diverge (concave lens) light rays. When light passes through a lens, it changes direction based on the lens shape and curvature. The point where rays converge (or appear to diverge from) is called the focal point. This principle helps explain how eyeglasses, cameras, and microscopes work, allowing us to focus and magnify images by manipulating light paths to achieve clearer views of objects.