Why does a convex lens converge light rays?
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A converging lens (or convex lens) is curved on both sides. This means the light rays coming out of it come together at a point – they converge. The point at which the light rays meet is called the focal point. The focal length is found by focussing a distant object on a piece of paper through the lens.
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Refraction. This occurs when light travelling in one enters another medium with a different density. When travels in air and then enters into glass [Convex lens], it gets refracted and due to refraction at both the pointed sides, light bends in such a way it converges from all directions on a single point.
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