Question

what is biconvex lens? where these lens are used and why? ​

Answer 1

A biconvex lens is a special type of lens comprising two convex lenses one behind another. This types of lenses have two convex faces as well.

These are used in magnifying glasses, binoculars, telescopes, etc. in order get a highly magnified real and erect image.

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Answer 2

Biconvex lens:

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

uses:

These lenses are used as a burning-glass.Most high quality cameras, telescopes and binoculars use concave lenses to improve the quality of the images they provide. Microscopes and reflecting telescopes make use of a concave mirror, a plane mirror, and a convex lens, while refracting telescopes use two convex lenses.

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