Question

what is the difference between biconvex,double convex and normal convex lens.plz give required answer Don't answer for points
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Answer 1

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what is the difference between biconvex,double convex and normal convex lens.

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A plane convex lens is plane on one side and convex on the other side; while the biconvex or double convex lens is curved in convex manner on both sides of the glass, as used in magnifying glass.

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Answer 2

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Biconvex lens is the simple lenses which comprise two convex surfaces in spherical form, generally having the same kind of radius of curvature. These are also called a convex-convex lens.

Being a kind of simple lens, the biconvex lens has a wide range of applications of it, but it is not limited to, control and focusing of laser beams, quality imaging and also the other kinds of optical instruments.

A human eye lens is the best example of a Biconvex lens. For an eye, in order to see the objects at hand, the light rays coming from the objects have to bend more sharply in order to bring them on to the focus of the retina; the light rays coming from a distant object requires less refraction. To acquire this, it has to be of the highly elastic form so that the shape can be altered and thus can be made less or more convex. The higher convex a lens, greater is the refraction.

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Double convex lenses have focal points on both sides of the lens; these and the points at twice the focal length are used to locate objects and images. When the object is outside 2F, the image will be between F and 2F on the other side and will be inverted, diminished, and real.

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A convex lens is also known as a converging lens. A converging lens is a lens that converges rays of light that are traveling parallel to its principal axis. They can be identified by their shape which is relatively thick across the middle and thin at the upper and lower edges.

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