Microsoft powerpoint 8 unit 2 new chapter 6 compatibility mode. A mirror that is curved outward like the back of a spoon we see our toes above our head. Convex mirror is also called as a diverging mirror as the light beam arising from the same source will reflect and diverge. It bends light further away in the middle, more like the inside of a bowl. Light optics ray diagrams for concave and convex mirrors and lenses, mirror, the mirror, and many more programs. View and download powerpoint presentations on convex lens and concave lens ppt. We look at the image formation by these spherical lenses using ray diagrams.
Find powerpoint presentations and slides using the power of, find free presentations research about concave and convex lens ppt. Rays of light parallel to the principal axis after refraction through a convex lens meet at a point converge on the principal axis. These images are formed when light falls on a mirror from the object and is reflected back by the mirror on the screen. Pasco light machine and a sheet of graph paper, reflective surface, concave lens, convex is the light. Find convex and concave lenses lesson plans and teaching resources.
A convex mirror or diverging mirror is a curved mirror in which the reflective surface bulges towards the light source. Ray diagrams 4 of 4 concave lens and convex mirror youtube. Mirrors having curved surfaces are known as spherical mirrors. There are many differences between concave and convex mirrors and some of them are as follows. In lesson 4, we will follow a similar pattern of inquiry for convex mirrors. Uses a concave mirror, plane mirror and a convex lens to collect and focus light from objects at a great distance. How to know whether a lens is convex or concave without. Light and color for the middle school by greg corder toc reflection and mirrors refraction and lenses applications of lenses and mirrors color. The principal rays can be displayed, as well as rays drawn by the user. Convex mirrors diverging and concave lenses diverging can be memorized with suv smaller, upright, virtual concave mirrors converging and convex lenses converging have 5 different possibilities. Use the lensmakers equation to determine the focal length of a thin lens. The focal length f is negative for a convex mirror.
A convex lens has thin edges while the concave lens is thinner at the center. Lenses lenses are made of transparentmaterials, like glass or plastic. Uses a concave mirror, plane mirror and a convex l ll d f lens to collect and focus light from objects at a great distance. Any lens that is thicker in the center than the ends is a convex lens.
The various lengths six lengths are relevant for mirrors. View and download powerpoint presentations on concave and convex lens ppt. This powerpoint introduces concave and convex lenses, and also goes through related concepts such as focal points, real virtual images, and the anatomy of the eye. A lens which is thinner in the centerthan the edges is a concave, or diverging, lens since rays going through it will bespread out. How to make my mac mirror my powerpoint slides by default. To find the focal point and focal length of convex and concave lens. Each of a lens two faces is part of asphere and can be convex or concave if a lens is thicker at the center than theedges, it is a convex, or converging, lenssince parallel rays will be converged tomeet at the focus. So, in concave and convex mirrors, a couple of figures have an opposite sign. A curved mirror is a mirror with a curved reflecting surface. Power point uses slides from resources on tes and the worksheets are from btec collins resources. Concave convex mirror image formation rules parallel rays light rays parallel to the principal axis are reflected through the focus of the mirror.
Shows how to draw the ray diagrams for locating the image produced by a concave lens and a convex mirror. In this video the ray diagrams for concave and convex mirror are discussed and demonstrated, as in this video the all the ray diagrams and reflection is explained with the help of. The focal point of the convex mirror lies behind the mirror, wheres in the case of concave mirror the focal point lies in front of the mirror. Types of lenses convex lenses are also known as converging lenses since they bring light rays to a focus. Concave, convex, and plane mirrors by sophie o on prezi. It includes notes, videos, questions, vocabulary and set homework. A free powerpoint ppt presentation displayed as a flash slide show on id. The eye and sight contrast ways in which light rays are bend by concave and convex lenses. The focal length of the convex lens is positive whereas that of the concave lens is negative. View concave and convex mirror ppts online, safely and virusfree. Light ray rules for convex lens and concave lens are discussed. A lens which is thinner in the centerthan the edges is a concave, or diverging, lens since rays going through it will. Ppt convex lens powerpoint presentation free to view. The equations we used for mirrors all work for lenses.
A convex mirror diverges light, as does a concave lens. The distance from the mirror to the focal point f is called the focal length and is labeled f. In powerpoint 2011, 2016, and 2019 when you select the option to present, the mac will use presenter view. In a ray diagram, a convex lens is drawn as a vertical line with outward facing arrows to indicate the shape of the lens. Find powerpoint presentations and slides using the power of, find free presentations research about convex lens and concave lens ppt. Geometrical optics in the study of how light behaves, it is. Lesson 3 focused on the reflection of light by concave mirrors and on the formation of images by this reflected light. Any lens thicker at the ends than in the center is a concave lens.
Such mirrors always form a virtual image, since the focal point f and the centre of curvature 2f are both imaginary points inside the mirror, that cannot be reached. A mirror that is curved inward like the inside of a spoon convex. Figure 33b shows the reflection of several light rays at a curved mirror. An american football, which curves outwards, is a good example of a convex shape. If you continue browsing the site, you agree to the use of cookies on this website. The cartesian sign convention is used here using a ray parallel to the principal axis and one incident upon the center of the mirror, the position of the image can be constructed by backprojecting the rays which reflect from the mirror. The editable powerpoint features slides rich in content and allow for you to add or delete information and pictures the editable test features a variety of questions in the form of multiple choice, sentence completion, diagram interpretation and. Arial calibri default design mirrors slide 2 plane mirror type of image spherical curved mirrors concave mirror converging concave mirror converging mirror summary for concave mirror mirror equation magnification sign convention convex mirror diverging convex mirror diverging slide 15 summary for convex mirror simulation problem. Place an object in front of a mirror of variable radius of curvature and observe the image that is formed.
We demonstrated that the combination of a hyperbolic convex and elliptical concave mirrors works as a compact reflective xray imaging. The surface may be either convex bulging outward or concave recessed inward. The radius of curvature r, which is positive for concave mirrors. Convex lens converging lens concave lens diverging lens convex lens a convex lens is shaped like two half circles, thin at the edge and thick at the middle. There are several ways of finding out if a lens in concave or convex.
Compact reflective imaging optics in hard xray region based. A convex lens gives a real, inverted image if the object is outside the focal length of the lens. Convex lenses are also known as converging lens since the rays converge after falling on the convex lens while the concave lenses are known as diverging lenses as the rays diverge after falling on the concave lens. Object is past r between r and f on the other side inverted real object at r. The image formed by the convex mirror is virtual, erect, diminished and is formed closer to the mirror than the actual object. Describe how a prism forms a visible spectrum explain why different objects have different colors describe how mirrors reflect light example. All additional elements and decoration on the left are consistent with a viewpoint from above, while those on the right with a viewpoint from below. Concave lens can be identified as the lens which disperses the light rays around, that hits the lenses. Concave, convex, and plane mirrors plane mirrors flat produces an image that identical in size to the original object images are upright image is virtual used to see ones reflection both produce virtual images both produce upright images both can produce virtual. It will give a virtual upright image if the object is within the focal length. Different types of image formed by convex lens a free powerpoint ppt presentation displayed as a flash slide show on id. We most commonly use concave to describe processes linked to lenses, mirrors and reflection. Concave and convex lenses image formation curvature. Concave lenses might be used in things like telescopes, binoculars, cameras and lenses in.
Light and color for the middle school the champion school. Suzi maertens and emmajane naegeli concave and convex properties any ideas. The simplest way is to hold a convex lens up near the eye and look distant objects through it. Ray diagrams for concave and convex mirror class10 ppc. This focal length is onehalf the radius of curvature for the lens, f 1 2 r. Concave mirrors and convex mirrors image formation, ray diagram. One can view these features as concave by viewing the image upsidedown. A concave mirror, for example, will make you look taller due to the way light reflects back from it. In that lesson, it was shown that concave mirrors can produce both real and virtual images, depending upon the object location. Convex and concave mirrors and lenses concave mirror.
Convex lens refers to the lens which merges the light rays at a particular point, that travels through it. In this article, we will learn about image formation by concave and convex lenses. The real and inverted image is formed through the convex lens, but a concave lens formed an erect, virtual and diminished image. A powerpoint presentation about curved mirrors concave and convex in science 10 slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Drawing ray diagrams for concave mirrors teaching resources. Chapter 34a reflection and mirrors geometrical a powerpoint presentation by paul e. Convex mirrors reflect light outwards, therefore they are not used to focus light. Concaveconvex mirror image formation rules powerpoint. Concave and convex mirrors and lenses by emmajane naegeli. Most devices that control light have one or more lenses in them some use only mirrors, which can do most of the same things that lenses can do. The object in the image formed by the convex mirror appears much smaller than the actual object.
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