Question

what is lense? define concave and convex lense​

Answer 1

Answer

A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction. ... 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

• straight light beam coming from the source to a diminished, upright, virtual image is known as a concave lens. It can form both real and virtual images. Concave lenses have at least one surface curved inside.
• convex lens Add to list Share. Definitions of convex lens. noun. lens such that a beam of light passing through it is brought to a point or focus. synonyms: converging lens.

Answer 2

Answer:

○A lens is a transparent device with two curved surfaces, usually made of glass or plastic, that uses refraction to form an image of an object. ... A system of lenses and/or mirrors forms an image by gathering rays from an object and then causes them to converge or diverge.○

▪︎▪︎Concave lens ▪︎▪︎

A concave lens is a type of lens that diverges a straight light beam coming from the source to a diminished, upright, virtual image is known as a concave lens. It can form both real and virtual images. Concave lenses have at least one surface curved inside.

▪︎▪︎Convex lens▪︎▪︎

Lens such that a beam of light passing through it is brought to a point or focus.