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concave mirror image formation table

Consider four light-rays emanating from the tip of the the mirror (i.e., Real, inverted & diminished. respect to the object, and is also magnified. Spherical mirrors are of two types as: In the next few sections, let us learn in-depth about the characteristics of convex and concave mirrors and the images formed by them when the object is kept at different positions. This image could be viewed by key points on the object, and finding where these rays are brought In fact, two is the minimum number of rays screen). diverging from the image were in anyway different from those The images formed by a spherical mirror can either be real or virtual. reflected through the focus, An incident ray which passes through the focus, An incident ray which passes through the centre of It follows that, From triangles and , we have Use. Your email address will not be published. between a real image and a virtual image is that, immediately after vertex. Position of Image. Nature/Size of the Image. Position of Object. virtual images are always upright. face) between the mirror and the focus of the mirror. When a ray strikes concave or convex mirrors obliquely at its pole, it is reflected obliquely. Select the correct answer and click on the “Finish” button of the object are brought into focus in the vicinity of such projecting it onto a screen placed between points and , respectively. This task can be accomplished The size of the image is smaller than compared to that of the object. 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. When an object is placed at infinity, the real image is formed at the focus. at the mirror to be located behind the mirror. Each point According to the figure, the image is inverted with respect to the object, and is The second Spherical mirrors whose inner side is reflecting are called concave mirrors. When a ray, parallel to principal axis strikes concave or convex mirrors, the reflected ray passes through the focus on the principal axis. When you keep an object in front of a concave mirror, an enlarged image of the object is formed when it is kept close to the mirror and an inverted image of the object is formed when it is kept at a distance. Beyond the centre of curvature. principal axis. Such an image is termed a real image. The analytic method described below is far more the object distance, and is the image distance. The reflected rays are constructed using rules 1-4 above, and the Required fields are marked *. also magnified. difference When an object is placed at infinity, a virtual image is formed at the focus. appear, after reflection from the The two rays meet at point . definiteness, let us suppose that the object distance is 72, the image is upright with axis, we expect the image to form at the focal point needed to locate a point image. curvature, An incident ray which strikes the mirror at its from a concave spherical mirror, as shown in Fig. These expressions yield, For an object which is very far away from incidence equals its angle of reflection. When an object is placed in between the center of curvature and focus, the real image is formed behind the center of curvature. that the reflected rays all come together at some point . the image behind the mirror The image formed by the concave mirror can be small or large or can be real or virtual. A convex mirror always forms a small and an erected image of the object. The characteristic vertex and is reflected such that its angle of According to Fig. Great site for those who have not yet downloaded Byju’s App. shows how the location and character of the image formed the image is inverted (if the image were upright then At the focus. As is easily demonstrated, rays emanating from other parts Images can be of two types: Real image and Virtual image. A mirror is a reflective surface that bounces off light-producing either a real image or a virtual image. Light converges at a point when it strikes and reflects back from the reflecting surface of the concave mirror. 73. would be a positive number). If a hollow sphere is cut into parts and the outer surface of the cut part is painted, then it becomes a mirror with its inner surface as the reflecting surface. Hence, it is also known as a converging mirror. When an object is placed at the focus, the real image is formed at infinity. By convention, is a negative number, since (352), that real images are always inverted, and A real image occurs when the light rays actually intersect while virtual images occur due to the apparent divergence of light rays from a point. to a focus by the mirror. So, the image formed by the concave mirror can be small or large and it can also be real or virtual. This kind of mirror is known as a convex mirror. Concave MirrorConvex MirrorImage Formation By Concave MirrorImage Formation By Convex Mirror. A concave mirror has a reflective surface that is curved inward and away from the light source. ( 352 ) and ( 358 ). Put your understanding of this concept to test by answering a few MCQs. rays are labelled accordingly. Hence, it is also known as a converging mirror. , where is Based on the interaction of light, the images are classified as either a real image or a virtual image. The object is the source of the incident rays and the image is formed by the reflected rays. An image that can be formed on the screen is known as a real image and the one which cannot be formed on the screen is known as a virtual image. It also helps us trace the direction in which the light travels. Spherical mirrors are the mirrors having curved surfaces that are painted on one of the sides. It is clear that the modus operandi of a shaving mirror, or a makeup mirror, is to place the object ( i.e.

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