A thick convex lens is generally considered more powerful than other types of lenses.
Here's why:
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Lens Power and Focal Length: The power of a lens is inversely proportional to its focal length. This means a lens with a shorter focal length has greater power. Lens power (P) is measured in diopters (D), where P = 1/f (and 'f' is the focal length in meters).
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Convex Lenses: Convex lenses converge light rays. A thicker convex lens bends light more sharply, resulting in a shorter focal length.
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Thickness and Curvature: Increased thickness generally correlates with increased curvature. Higher curvature means a shorter focal length.
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Power Comparison: A thick convex lens bends light more strongly than a thin convex lens or a concave lens. This greater bending translates directly to a shorter focal length and, therefore, higher optical power.
In summary, a thick convex lens possesses greater optical power due to its ability to converge light more strongly, resulting in a shorter focal length.