Curved mirrors, ray diagrams, and simulations background information spherical mirrors may be concave or convex. Curvedspherical mirror a curved mirror is a mirror with a curved reflecting surface. Lets see the ray diagrams for concave mirror for the different positions of the object. Concave mirrors sometimes referred to as converging mirrors are used all around us to reflect, focus and redirect light or otherelectromagnetic waves such as a laser at a store checkout or the mirror used in a reflecting telescope or a microwave. 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. Using ray diagrams to locate images in concave mirrors by. Its not the law of reflection, i understand that part, but i dont understand how you figure out what angle to draw, for example, the ray that goes from the top of the. On a separate sheet of paper, answer the following questions 1. The method for drawing ray diagrams for concave mirror is described below. Consider the case where the shape of the mirror is such that light rays parallel to the axis of the mirror are all focused to a common spot a distance f in front of the mirror. Shows how to draw the ray diagrams for locating the image produced by a concave lens and a convex mirror. When a ray strikes concave or convex mirrors obliquely at its pole, it is reflected obliquely.
Learn vocabulary, terms, and more with flashcards, games, and other study tools. Chapter 34a reflection and mirrors geometrical a powerpoint presentation by. In the first section of lesson 4, we learned how light is reflected by convex mirrors in a manner that a virtual image is formed. Drawing ray diagrams for concave mirrors teaching resources. Convex mirrors always produce virtual, erect and diminished images. To figure out the position and size of an image reflected by a curved mirror, you can draw a scaled diagram of the mirror as follows. Convexconverging f concave diverging drawing ray diagrams for convergingdiverging mirrors 1. 1 how to draw a principal ray diagram hint not displayed. 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. We are interested in the image produced and therefore the following properties will be looked at.
Through the focal point to the mirror the ray will reflect parallel to the principle axis. Choose from 361 different sets of quiz ray diagram flashcards on quizlet. Convex mirrors the main difference between concave and convex mirrors is the most easily seen by considering how they reflect light rays parallel and close to. A concave makeup mirror is designed so that a person 25. Define and illustrate your understanding of real, virtual, erect, inverted, enlarged, and.
Yet the same method works for drawing a ray diagram for any object location. Ray diagrams let us move now from plane mirrors to spherical mirrors, which curve like the surface of a sphere. Reflection by concave mirror page 1 of 4 we cover everything you need to know and understand about reflection by concave mirrors. When a ray, parallel to principle axis strikes concave or convex mirrors, the reflected ray passes through the focus on the principle axis. These practice questions will help you study and can. Difference between concave and convex mirrors august 24, 2017 admin share this. Think of a fun house carnival mirror and how you appear shorter or taller, these are all effects that various types of curved mirrors have. We will cover i what is a concave mirror ii how to read a concave mirror iii reflection by concave mirror iv image formation by concave mirror v uses of concave mirror concave mirror. Ray diagrams concave and convex mirrors light cbse. Spherical mirrors can be convex, such as the mirrors on the passenger side of cars, or concave, such as shaving or makeup mirrors.
Microsoft word burning paper with a concave mirror. Drawing ray diagrams plane mirrors, concave mirrors, convex mirrors, converging lenses, diverging lenses converging. Any incident ray traveling parallel to the principal axis on the way to the mirror will pass through the focal point upon reflection. This video is highly rated by class 7 students and has been viewed 3046 times. A concave spherical mirror has a lens equation similar to that of a geometrical lens. Light traveling parallel to the principal axis pa will. The image formed by the different mirrors have different characteristics. Terminologies associated with sphericalcurved mirrors. Notes,whiteboard,whiteboard page,notebook software,notebook, pdf,smart,smart technologies ulc,smart board interactive. To understand the basic principles of ray optics to understand the principles of construction of ray diagrams to explain how the images are formed by the concave mirrors for various positions of objects objectives. Converging lenses are thicker in the centre, and are thinner near the edges. A plane mirror will always produce a virtual image. Where will the image form if the same object is placed 15 cm in front of a convex mirror with a focal length of 18 cm.
In this experiment, you will measure the focal length of a concave mirror, locate images produced by real concave mirrors and compare their position to the position predicted by a ray diagram. 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. Check your understanding of concave mirrors with an interactive quiz and printable worksheet. Ray diagram construction for concave mirrors presented by obina johnson okeny 2. Ray diagram questions complete the following ray diagrams and the s. Which, if any, of these scenarios produce a virtual image. A concave mirror will only produce a virtual image if the object is located in front of. The most convenient way to create a ray diagram with spherical mirrors is to draw 3 strategic rays. The same object is placed at different distances in front of six different concave spherical mirrors. Description of how to draw ray diagrams for convex mirrors for grade 10 science. Snc 2d light and geometric optics convex mirrors extra practice worksheet a draw a ray diagram for each to locate the image. The image can be located graphically by adopting the following rules. Virtual images are always erect and cannot be taken on a screen.
Here we are going to look at how exactly concave and convex mirrors distort the image of an object. You can see a listing of all my videos at my websit. Drawing ray diagrams plane mirrors, concave mirrors. Where will an image form if an object is placed 58 cm from the mirror. Guidelines for rays falling on the concave and convex mirrors. In this equation, the symbols d o and d i represent the distances from the mirror to the object and to the image. In this lab, you will construct the three ray diagrams for diverging mirrors. For the following mirrors and corresponding object positions, construct ray diagrams. 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. Grade 8 science ray diagrams for convex mirrors convex mirrors stick out they have a curved shape that curves towards the object in front of the mirror. A ray diagram for concave mirror shows no image is formed. Parallel to the principal axis to the mirror the ray will reflect through the focal point. 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. The physics classroom combines words, graphics, and animations to explain how to construct ray diagrams for concave mirrors.
Part a which, if any, of these scenarios produce a real image. The goal of the experiment is to be able to analyze ray diagrams so as to determine fundamental properties of image formation. Concave mirrors generally produce real and inverted images except when the object is between the pole and the principal focus. These mirrors are often sections of spheres assumed in this class. Drawing concave mirror ray diagrams in optics with a virtual image part 2 duration. Converging and diverging lenses 6 2275 speedway, mail code c9000 austin, tx 78712 512 4715847 i. 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. Apr 17, 2020 ray diagrams concave and convex mirrors light cbse class 7 science class 7 video edurev is made by best teachers of class 7.
Lens ray diagrams 2 types of lenses just like mirrors convex lens converging thick in middle, thin edge opposite of mirror concave lens diverging thin in middle, thick edge. Concave mirrors have the focal point f in front of the mirror, and convex mirrors have the focal point behind the mirror. Geometric optics converging lenses and mirrors physics lab iv objective in this set of lab exercises, the basic properties geometric optics concerning converging lenses and mirrors will be explored. As can be seen in this diagram below, the incident rays yellow all begin on the top of the object red arrow and are each scattered from the mirror s front, convex surface. Then describe the location of the image, orientation upright or inverted of the image, the relative size of the image larger or smaller than object, and the type of image real or virtual. If an object is placed inside the focal length of a concave mirror, and enlarged virtual and erect image will be formed behind the mirror. Grade 8 science ray diagrams for concave mirrors the.
To show how rays travel in order to form images in a concave mirrors. Characteristics of the image formed by a concave mirror. Diverging mirrors, sometimes refered to as shoplifting mirrors, only form reduced, virtual images. Move the object, the candle, with your mouse to explore how the location and the size of. 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. Learn quiz ray diagram with free interactive flashcards. Explain and discuss with diagrams, reflection, absorption, and refraction refraction of light rays. You have learned to use ray diagrams to locate images produced by concave mirrors, and you have seen images produced by concave mirrors. Ray diagrams concave mirrors to draw these diagrams, we will have to recall the two rules of reflection for concave mirrors. The reflections when dotted back green lines form a virtual image gray arrow behind the mirror. For your convenience, blank diagrams will objects already provided are located on this page in ie use landscape mode with margins.