Question

List three characters of images formed by convex and concave lens

Answer 1

The different cases will form beyond, diminished and same image.

• The first discuss the characteristics of convex lens. If the object is at infinity, image formed as point sized and used for the to concentrate the solar energy.

• If the object is beyond 2F, image be diminished and used for camera lens.

• If the object at 2F, then the image same as the object, used in telescope.

• Now the concave lens, they will form diminished, virtual and erect. Only when on the same side between F and O. It is used in galilean telescope.