Question

what is meant by convex lens give brief explanation

Answer 1

A convex lens bends light rays inward, which results in the object being perceived as larger or closer. When a piece of plate-glass is pressed against a slightly convex lens, or a watch-glass, a series of coloured rings is formed by reflected light, with a black spot in the centre. Arrow magnified by a convex lens

Answer 2

convex lens is a diverging lens which has an inner surface coating and the outer surface is reflecting