Characteristics of the Image Formed by a Concave Mirror According to the Position of the Object When the object is at infinity in the case of a concave mirror, the image formed has the following properties. The three types of images formed by mirrors (cases 1, 2, and 3) are exactly analogous to those formed by lenses, as summarized in the table at the end of Image Formation by Lenses. We use them because we know the paths of them. In this section, let us look at the types of images formed by a convex mirror. The properties of the image formed by a plane mirror If the object placed at the center of the mirror, image is also formed at center, real, inverted and with the same size as object. 1. When parallel rays (could be from a distant object) incident on a concave mirror, the reflected rays converge to a focal point (F), hence also called converging mirror. On the contrary, concave mirrors are used in torches and vehicle headlights. The image formed by a convex mirror cannot be projected on a screen while image by a concave mirror can be projected on a screen. Unlike images formed by concave mirrors, an image formed by a convex mirror cannot be projected on a screen. A diminished image formed by a convex mirror while a concave mirror formed a magnified image. When an object is located at infinity, a virtual image is created at the focus point. The image formed by a convex mirror is a virtual image, while concave mirror forms a real or virtual image, depending on the position of the object. In case, of a convex mirror, there are only two possible positions where the object can be positioned and an image can be formed. 1), and spherical mirrors (concave and convex) as shown in Fig. a. The image formed in a convex mirror is always virtual and erect, whatever be the position of the object. Object Position Image Position Image Characteristics; At infinity: At focal point: Image is a point: Moving toward 2F: Moving from F toward 2F: Such an image is called a virtual image. The concave lens is known as the diverging lens because it diverges the rays after they pass through it, The image formed by the concave lens is a virtual image because it can not be received on a screen. The table shows what happens to the image as an object is brought from infinity toward a convex lens. The characteristics of images formed by Plane mirrors are interesting! Let’s start drawing images of the objects located in different parts of the mirror. Convex mirrors are used as side mirrors of automobiles while concave mirrors are used in torch lights etc. Therefore, the properties of the images formed here are formed behind the mirror, images are highly enlarged, images are virtual and erect. Convex mirrors are used as rear-view mirrors in cars, to enable the driver to see the traffic behind him. 2. The image is real. But the characteristics of images formed by Spherical Mirrors are more fun! … 2. Image Characteristics for a Convex Lens. Image Formation in Concave Mirrors While drawing images of the object we benefits from the special rays given above. It is easiest to concentrate on only three types of images—then remember that concave mirrors act like convex lenses, whereas convex mirrors act like concave lenses. 1. image formation by plane mirrors (Fig. Uses of the concave mirror and the convex mirror in our daily life. Comparison Video Ray Diagrams for a Convex Mirror. The three types of images formed by mirrors (cases 1, 2, and 3) are exactly analogous to those formed by lenses, as summarized in the table at the end of "Image Formation by Lenses." Object is positioned at Infinity