This point is called the principal focus of the concave mirror. In this lesson, we will see a similar method for constructing ray diagrams for convex mirrors. Draw a ray in line with the focal point, with the reflected ray parallel to the principal axis. They are slightly different then the convex lenses however and you should be careful to notice the differences. Curved mirrors concave and convex linkedin slideshare.
Review the tutorial for ray tracing steps in the previous activity. A number of rays parallel to the principal axis are falling on a concave mirror. Notes,whiteboard,whiteboard page,notebook software,notebook, pdf,smart,smart technologies ulc,smart board interactive. Learning goals i can draw ray diagrams for concave and convex mirrors. Curved mirrors, ray diagrams, and simulations background information spherical mirrors may be concave or convex. In this equation, the symbols d o and d i represent the distances from the mirror to the object and to the image. Concave mirrors when the object is beyond 2x the focal length. The physics classroom grants teachers and other users the right to print this pdf document and to download this pdf document for private use.
Drawing ray diagrams you will be given a printed copy of this in class. The method of drawing ray diagrams for convex mirrors is described below. A concave makeup mirror is designed so that a person 25. 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. Feb 08, 20 drawing diverging convex mirror ray diagrams bryan clintberg. Concave mirror convex mirror image formation by concave mirror concave mirror ray diagram image formation by convex mirror. Spherical mirror is a curved mirror which is a part of a hollow sphere. Convexconverging f concave diverging drawing ray diagrams for convergingdiverging mirrors 1.
Jul 11, 2011 c ray going towards the centre of curvature c are reflected back along their own paths because they are normal to the mirror. On a separate sheet of paper, answer the following questions 1. Light traveling parallel to the principal axis pa will. Microsoft word six ray diagrams mirrors and lenses. For the following mirrors and corresponding object positions, construct ray diagrams. When drawing ray diagrams for concave mirrors, i was advised to. Rays of light parallel to the principal axis after reflection from a concave mirror meet. I am parallel to the principal axis i am extended backwards by dotted lines because i. Whenever a light ray hits the interface between two tr ansparent materials, generally some of the. A concave spherical mirror has the silvered surface of the mirror on the inner.
Seven blank business diagram circular relationship curved bullet curved up arrow chart icon. Instructor may wish to either use the same lens specifications focal length for each lens that the groups use or varying specifications. To draw ray diagrams to locate and describe images formed from convex lenses and concave mirrors. Instructors are permitted to make and distribute copies for their classes. They are all meetingintersecting at a point on the principal axis of the mirror.
When sighting along such a line, light from the object reflects off the mirror according to the law of reflection and travels to the persons eye. Draw a ray through the center c, the reflected ray will be same as the incident ray but opposite in direction. Download and print the ray tracing worksheet below. Ray diagrams for concave mirrors the physics classroom. Consider a ray from the top of the object that re ects at the center of the mirror.
When drawing ray diagrams pb jec t grade 8 science ray diagrams for concave mirrors 1. Snc 2d light and geometric optics convex mirrors extra practice worksheet a draw a ray diagram for each to locate the image. Similarly, we see an image of an object because light from the object reflects off a mirror and travel to our eyes as we sight at the image location of the object. A mirror is a surface which reflects a clear image. On the diagram, rays lines with arrows are drawn for the incident ray and the reflected ray. A concave lens may be considered to be made up of two prisms and a solid. A ray diagram can be used to determine the position and size of an image. This ray passes undeviated along the principal axis. Explain why the light beams are reflected this way using the law of reflection. Pick a point on the top of the object and draw two incident rays traveling towards the mirror. A ray diagram shows the path of light from an object to mirror to an eye. The focal point is the point at which rays incident. Converging and diverging lenses 2 2275 speedway, mail code c9000 austin, tx 78712 512 4715847 i.
The method is applied to the task of drawing a ray diagram for an object located beyond the center of curvature c of a concave mirror. Plane mirrors produce images that are upright, virtual and of the same size as the object and. For concave mirror, the reflected rays converge to the focal. The image can be located graphically by adopting the following rules. Choose from 361 different sets of quiz ray diagram flashcards on quizlet. The image is close to the mirror, upright, small and virtual. Used in mirror telescopes its front is a silverplated mirror the spherical concave mirror finds its most valuable application as eye mirror helmholtz 1851. Like plane mirrors, spherical mirrors produce images of objects. Image formation convex vs concave one side will be concave and the other will be convex. Therefore it has a radius, center point, circumference, etc lets make ray diagrams. If the object is 12 cm tall, what will be the height of the image. When a ray strikes concave or convex lenses obliquely at its pole, it continues to follow its path.
Signs and symbols icon for website graph and diagram vector paper curved arrows diagram diagram collection on grey vector illustration business infographics vector company milestones timeline 4 steps. A ray diagram is a diagram that traces the path that light takes in order for a person to view a point on the image of an object. Physics notes for class 12 chapter 9 ray optics and optical instruments light light is a form of energy eyes. Draw a ray travelling to the vertex and reflecting at the same angle. Blank ray diagrams for converging, concave, mirrors. A ray parallel to mirror axis passes through the focal point of a concave mirror or appears to come from the focal point of a convex mirror. Microsoft word burning paper with a concave mirror. Signs and symbols icon for website graph and diagram vector paper curved arrows diagram diagram collection on grey vector illustration business infographics vector company milestones timeline 4 steps template copyspace with pointers.
Ray diagrams for convex mirrors when object is in front of f duration. Cbse 2011 we require minimum two rays for locating the image formed by a concave 27. Learn quiz ray diagram with free interactive flashcards. To show how rays travel in order to form images in a concave mirrors. Shows how to draw ray diagrams and locate the image for concave mirrors. Move the object, the candle, with your mouse to explore how the location and the size of the image change with the position of the object. Guidelines for rays falling on the concave and convex lenses. It serves during examination of the inside of eyes. An image which can be formed on the screen is known as real image and the one which cannot be formed on screen is known as a virtual image. Since the light refracts through the lens, and doesnt bounce off, like a mirror, when drawing ray diagrams, there is one difference. Ray diagram construction for concave mirrors presented by obina johnson okeny 2. Mirror diagrams can be confusing to students, but this foldable and bundled lesson will put all the information in one place and at their fingertips. Physics notes for class 12 chapter 9 ray optics and.
In every problem, draw a ray diagram to confirm your answer. Drawing ray diagrams for concave mirrors teaching resources. Draw a ray diagram to show the formation of a virtual image by a concave mirror. Spherical mirrors like the ones on sharp corners on roads, in grocery stores, etc a spherical mirror is simply a piece of a mirrored sphere. Drawing ray diagrams for concave mirrors tes resources. Jacob physical science the line of sight principle suggests that in order to view an image of an object in a mirror, a person must sight along a line at the image of the object. Any ray appearing to travel through the virtual focus f is reflected parallel to the principal axis. Concave mirrors extra practice worksheet a draw a ray diagram for each to locate the image. How to predict where the image of an object is, in a convex mirror.
If youre seeing this message, it means were having trouble loading external resources on our website. The diagram below shows the object and image, and one ray. Concave and convex lenses image formation curvature. Concave mirrors and convex mirrors image formation, ray. Ray diagram for a concave lens figure below shows how light rays are focused by a concave lens. The method for drawing ray diagrams for concave mirror is described below. Ray diagrams concave mirrors the theme of this unit has been that we see an object because light from the object travels to our eyes as we sight along a line at the object. Image 2f f 2f f ray diagrams for concave diverging lenses the. Ray diagram for an object located at the focal point thus far we have seen via ray diagrams that a real image is produced when an object is located more than one focal length from a concave mirror. Concave spherical mirrors and ray diagrams a spherical mirror is a reflective segment of a sphere with a radius of curvature r.
Stepbystep procedure for drawing ray diagrams the method of drawing ray diagrams for convex mirrors is described below. Draw a ray parallel to the principal axis, with the reflected ray reflecting in line with the focal. Draw a ray parallel to the principal axis, with the reflected ray reflecting in line with the focal point behind the mirror. Use the law of reflection and the embedded protractor in order to draw the reflected ray associated with the given incident ray for the following plane mirror situations. Optical ray diagram rules for convex mirror any ray traveling parallel to the principal axis is reflected such that it appears to pass through the virtual focus f. Concave mirrors have the focal point f in front of the mirror, and convex mirrors have the focal point behind the mirror. The lesson covers plane, convex, and concave spherical mirrors with ray diagrams and characteristics. Rules and some examples the images produced by spherical mirrors may be either real or virtual and may be either larger or smaller than the object. You can see a listing of all my videos at my website. Ray diagrams for concave mirrors were drawn in lesson 3.
Ray diagram of concave mirrors free download as powerpoint presentation. Pencil, ruler and ray tracing worksheet download links below procedure. May, 2014 how to predict where the image of an object is, in a convex mirror. It can be convex outside surface of a sphere or concave inside surface. A concave mirror is a mirror that is curved inward in the middle. This interactive animation shows that indeed, a concave mirror does produce an image of an object in front of it. Grade 8 science ray diagrams for concave mirrors the incident. Yet the same method works for drawing a ray diagram for any object location. When a ray, parallel to principal axis strikes concave or convex lenses, the reflected ray. Drawing a ray diagram is a great way to get an idea about. Instead of drawing the 3rd ray through the center of curvature, draw the third ray through the center of the lens, it will pass straight through, no refraction this is the middle ray in the diagram below. Exploring concave mirror images the pdf file below accompanies the concave mirror image formation interactive.
Drawing diverging convex mirror ray diagrams youtube. A ray passing through the focus of a concave mirror or proceeding toward the focus of a convex mirror is reflected parallel to mirror axis. Light reflection and refraction 161 let us recall these laws i the angle of incidence is equal to the angle of reflection, and ii the incident ray, the normal to the mirror at the point of incidence and the reflected ray, all lie in the same plane. Lets see the ray diagrams for concave mirror for the different positions of the object. Draw a ray parallel to the principal axis, with the reflected ray passing through the focal point. One mark questions convex mirror for seeing traffic at. It might help you to remember this if you think that when you look in a concave mirror, it looks like you are looking into a cave. The mirror has a radius r, and the distance from the mirror to the object is p. On a separate sheet of paper, answer the following questions. A quick ray tracing diagram confirms that both the position and height given are probably correct. Draw a ray through the focal point, with the reflected ray parallel to the principal axis. Concave spherical mirrors and ray diagrams r r, from the. The focal length of concave mirror is taken negative and for a convex mirror taken as positive. Consider the ray re ects from the center of the mirror, and note that di ray diagrams for concave and convex mirrors.
Blank ray diagrams for converging, concave, mirrors printer friendly version to reduce the possibility of spherical aberrations, that is, blurred images formed by rays not reflecting to a precise point, these concave mirrors are being represented by vertical lines. Presentations ppt, key, pdf logging in or signing up. This is the reason why a convex lens is called a converging lens. These laws of reflection are applicable to all types of reflecting surfaces. Incident rays at least two are drawn along with their corresponding reflected rays. Visually rich powerpoint full of diagrams and animations colorful, custom animations clearly show students how to use ray diagrams to locate images in concave mirrors if you like this resource, the full optics unit zip file 3 weeks worth of lessons covering properties of light, reflection, refraction, concave and. However, if you lose it, you will have to print another copy for yourself if you would like a physical copy. Students will be able to draw ray diagrams for convex and concave mirrors and distinguish between real and virtual images grade quiz practice. Lets explore the ray tracing technique to figure out the properties of images when things are kept in front of a concave or a convex mirror.
Concave mirrors and ray diagrams answers the image of an object beyond the centre of curvature of the mirror is. Grade 8 science ray diagrams for concave mirrors the. Using ray diagrams to locate images in concave mirrors by all. On a ray diagram, the angle of incidence is the angle that a reflected ray. In convex mirrors the focal point is always behind the mirror. Concave mirrors and convex mirrors image formation, ray diagram.
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