The diffrence between thick and thin lens depends on your precription for your eyes.
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A thick lens has varying thickness across its surface, which affects how light is refracted. A thin lens is assumed to have a uniform thickness, simplifying calculations in optics. Thick lenses can produce more complex optical effects compared to thin lenses.
A thick convex lens has a larger thickness and can bend light rays more than a thin convex lens. This results in a shorter focal length and stronger focusing ability for a thick convex lens compared to a thin convex lens.
Thicker lenses have a greater difference in curvature between the two surfaces, which causes light to bend more sharply and focus at a single point. This creates a stronger optical effect compared to thinner lenses with less curvature difference.
The thick lens equation is used in optics to calculate the focal length of a lens that is not thin, taking into account the thickness of the lens itself.
convex lens.
A converging lens, also known as a convex lens, is typically thick in the middle and causes light rays to converge to a focal point.