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shafin Imtiaz
@shafinimtiaz088
A lens is a transparent optical device that bends light to focus or disperse it. Lenses are used in eyeglasses, cameras, microscopes, and telescopes. They come in two main types: convex (converging) and concave (diverging). Convex lenses focus light to a point, while concave lenses spread it out. Lenses are essential in vision correction, photography, and scientific research.
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