)( is a concave lens
() is a convex lens
its a concave lens(:
The shape of a concave lens is such that the middle part is thinner than the edge. If one side of the lens is flat, then the other side will be shaped inward like a cave, kind of like this: [( You can also have a concave lens where both sides are shaped inward, like this: )( You can even have a concave lens where one side is shaped outward, and the other side is shaped inward, as long as the inward-shaped side is more dramatic than the outward-shaped side.
The objective lens
You are thinking of a lens. If it is to form an image you need a convex lens, also called a converging lens.
convex lens
convex
A convex lens curves outward, forming an elliptical shape.
convex
A surface that curves outward is called a convex surface. It bulges or protrudes outward towards the exterior.
A magnifying glass is convex, meaning that the lens curves outward.
A lens curved outward is called a convex lens. This type of lens is thicker at the center than at the edges and causes light rays passing through it to converge to a focal point.
A "concave" mirror curves inward. A "convex" mirror curves outward.
Convex is an adjective that describes something has a surface or boundary that curves or bulges outward. Convex lens are thicker at the center, they do cause light to converge.
outward
A curved piece of glass that bends light rays is called a lens. Lenses can be concave (curves inward) or convex (curves outward) and are used in various optical devices such as cameras, eyeglasses, and microscopes.
A lens that is curved outward is called a convex lens. This type of lens is thicker at the center and thinner at the edges, causing light rays passing through it to converge. Convex lenses are commonly used in magnifying glasses and camera lenses.
Such a mirror is concave.