Where are lens are used?

Answer 1

Lens are widely used. The most common example of the usage of lens is the spectacles. The spectacles contain either convex or concave lenses. In some cases it is plane. Convex Lens are widely used in Magnifying glasses, Microscope and Telescopes.

Convex lens are used in torch lights. It helps in concentrating the light rays emitted from the bulb to a point, hence increasing the intensity of light at that point.

Answer 2

Lenses are used in various applications such as cameras, microscopes, glasses, binoculars, and telescopes to focus, magnify, or diverge light. They are also used in medical devices like endoscopes and in optical instruments for measuring and analyzing light.