Question

what is lens? How many type of lens? ​

Answer 1

Answer:

There are 2types of lens

Explanation:

1)convex lens

2)concave lens

Answer 2

Answer:

The two types of lens are:

1. Convex Lens (Converging)
2. Concave Lens (Diverging

Explanation:

A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction. A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses (elements), usually arranged along a common axis. Lenses are made from materials such as glass or plastic, and are ground and polished or molded to a desired shape. A lens can focus light to form an image, unlike a prism, which refracts light without focusing. Devices that similarly focus or disperse waves and radiation other than visible light are also called lenses, such as microwave lenses, electron lenses, acoustic lenses, or explosive lenses.

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