The two spherical surfaces in a lens are part of spheres, and their centres are known as centres of curvature (C1 and C2). These centres play a crucial role in defining the optical properties of the lens.
What are the two spherical surfaces in a lens, and what is the significance of their centres?
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A lens has two spherical surfaces – one convex and one concave. The convex surface bulges outward, while the concave surface curves inward. The significance of their centers lies in the concept of optical axis and focal points. The optical axis is an imaginary line passing through the centers of curvature of the lens surfaces. The centers of the surfaces are crucial for defining the focal points, where parallel rays either converge (convex) or appear to diverge from (concave). These focal points play a pivotal role in determining the lens’s ability to converge or diverge light, influencing its optical properties in various applications like eyeglasses and cameras.