Definition of refraction of light at curved surfaces
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Irrespective of the position of object, on the principal axis, we will get an erect, virtual image diminished in size between the focal point and optic centre for a concave lens. A: The convex lens behaves as a converging lens, if it is kept in a medium with refractive index less than of the lens.
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when light enters one medium from another medium it changes it's path, it is called refraction of light.
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