![]() ![]() Hence the image is at a distance of 30 cm from the lens.The negative sign indicates it is on same side on lens as the object and it is a real image. Refractive index of an optical medium is ratio speed of the light in air to the speed of the light in the optical medium.So the refractive index of Ruby is 1.71 means ratio of speed of light in air to the speed of light in ruby is equal to 1.71ī. Plane Mirrors: Accessed 14th April 2022.A.Image Characteristics: Accessed 14th April 2022.The angle of reflection at the second mirror is:(a) 30° (b) 45° (c) 60° (d) 90☍raw a ray-diagram to illustrate your answer. Plane Mirror: Accessed 14th April 2022. A ray of light strikes a plane mirror PQ at an angle of incidence of 30°, is reflected from the plane mirror and then strikes a second plane mirror QR placed at right angles to the first mirror.We hope you enjoyed studying this lesson and learned something cool about Plane Mirrors! Join our Discord community to get any questions you may have answered and to engage with other students just like you! We promise, it makes studying much more fun!□ REFERENCES It exclusively forms laterally inverted images.The distance between the image and object is equal to the plane mirror.The characteristics of a plane mirror are: What are the characteristics of a plane mirror? The images formed by a plane mirror are virtual, erect, and of the same size as an object.ģ. What is the image formed by a plane mirror? Some of the most common uses of the plane mirrors are in periscopes, kaleidoscopes, automobiles, shaving mirrors, and in the head of torches and solar cookers for security-related purposes.Ī flat, polished, and reflective surface that produces a virtual erect image of the real object is called a plane mirror.Ģ.It creates an image that is of the same size as the object and which is a virtual and erect image.A plane mirror is a surface that needs at least two rays of light to make an image.The distance of the image formed is equal to the distance of the kept object from the plane mirror.The image formed is of the same size as that of the object.the angle of reflection, r, is the angle between the normal and reflected ray. The radius of curvature of a plane mirror is infinite. the hatched vertical line on the left represents the plane mirror.Image formation by a plane mirror is a virtual image.It forms laterally inverted images, meaning that images are not reversed from top to bottom, but are reversed from left to right.The distance between the image and the distance of the objects is equal to the plane mirror.Images formed are erect and of the same size as the object.The characteristics of the plane mirror are: The importance of a plane mirror is that it easily spots the location of the object behind you. Moreover, a light ray passing through the plane mirror must make the angle of reflection equal to the angle of incidence. It is a flat, polished, and reflective surface that produces a virtual image of the real object. The image below demonstrates what an image of an object looks like through a plane mirror.Ī plane mirror is a smooth or highly polished surface that reflects light in order to form an image. These two rays can either meet inside the mirror or appear to meet at any point behind the mirror. MEANING OF A PLANE MIRRORĪ plane mirror is a surface that needs at least two rays of light to make an image. And on the basis of the reflecting surfaces, mirrors can be classified as concave, convex, and plain mirrors. The surface which reflects most of the rays of light is called a mirror. When a mirror undergoes a rotation of a determined angle, the reflected ray will be deviated by twice this angle compared to its initial position. When the ray of light falls on a surface, it undergoes one of these phenomena - reflection, refraction, and absorption.
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