Mirrors and lenses ray diagrams worksheets share my lesson. Curved mirrors, ray diagrams, and simulations background information spherical mirrors may be concave or convex. The mirror shown below has a radius of curvature of 1,2m. The third principal ray occurs when the light goes straight through the vertex without changing its direction.
Diverging mirrors, sometimes refered to as shoplifting mirrors, only form reduced, virtual images. The ray 1 or the light beam 1 that come to the convex mirror are drawn parallel to the principal axis and touch the upper end of the object, then reflected by the convex mirror where the beam of light reflects as if from the focal point f. Description of how to draw ray diagrams for convex mirrors for grade 10 science. A convex mirror will reflect a set of parallel rays in all directions. Lens and mirror basics ray diagrams delsea 1st year physics. And here is the detailed geometry for one particular ray d o d i. Students will then be formally taught lens diagram terminology as well as the ray diagram laws of refraction.
To show how rays travel in order to form images in a concave mirrors. Concave and convex mirrors ray diagram for convex and. With a concave lens, the image will always be diminished, the right way up and virtual. The main difference between concave and convex mirrors is the most easily seen. An activity to find the relationship between the location of an object and the location of the image. In this lesson, we will see a similar method for constructing ray diagrams for convex mirrors. A ray diagram shows the path of light from an object to mirror to an eye. Convex mirrors reflect light outwards diverging light rays and. Where will the image form if the same object is placed 15 cm in front of a convex mirror with a focal length.
Concave mirrors and convex mirrors image formation, ray. Browse 361 sets of quiz ray diagram flashcards advanced. Concave mirrors and convex mirrors image formation, ray diagram. Lens and mirror inquiry lab pdf version ms word version.
This video is highly rated by class 7 students and has been viewed 3047 times. A ray diagram for a convex mirror shows that the image will be located at a position. Images formed by convex mirror using ray diagram class. Rays passing through the center of lens are undeflected 3. Description simulation of image formation in concave and convex lenses. Jun 29, 2015 description of how to draw ray diagrams for convex mirrors for grade 10 science. Ray diagram construction for concave mirrors presented by obina johnson okeny 2. 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.
The first principal ray occurs when the light comes in parallel to the principle axis, it goes out through the focus. 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. Lets explore the ray tracing technique to figure out the properties of images when. In addition to the above, you can switch to a mirror by tapping the lens button at the top of the screen. I am parallel to the principal axis i am extended backwards by dotted lines because i. A mirror is a part of a smooth and highly polished reflecting surface. Draw a ray diagram to show the image formed by the mirror. In this case image will form between f and 2f,image will be real,inverted,smaller than the object. Apr 11, 2020 the ray passing through the focal point becomes parallel to the principal axis after refraction by the lens. Yes, the first ray diagram, when the pen was 11 cm from the mirror shows an inverted image that is slightly larger than the object, agreeing with our computed magnification of 1. The reflections when dotted back green lines form a virtual image gray arrow behind the mirror. See diagram below the steps to draw a ray diagram for a diverging mi rror are the same as those for the converging mirror. You may now understand that the surface of the spoon curved inwards can be approximated to a concave mirror and the surface of the spoon bulged outwards can be approximated to a convex mirror. In addition to using a ray diagram to locate and characterize an image produced by a convex mirror, we can also calculate the distance from the mirrors surface to the image.
In the second simulation, i used the laws of drawing the ray diagrams as given in my book. Each ray intersects at the image location and then diverges to the eye of an observer. A ray diagram is a tool used to determine the location, size, orientation, and type of image formed by a mirror. A concave makeup mirror is designed so that a person 25. Each person in your lab group should draw this ray diagram. All lenses and mirrors can use ray diagrams to find images. Ray diagrams for convex mirrors the physics classroom. Learn about concave mirrors and convex mirrors indepth. 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. Please practice handwashing and social distancing, and check out our resources for adapting to these times. Furthermore, the image will be upright, reduced in size smaller than the object, and virtual. Question 1 mention few applications of convex mirror. The schematic representation of these mirrors is shown in fig.
In order to construct a ray diagram for a concave mirror, you must know the focal length of your mirror. The ray passing through the focal point becomes parallel to the principal axis after refraction by the lens. 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. A ray diagram for a convex mirror shows that the image will be located at a position behind the convex mirror.
A ray that is parallel to the principle axis, on reflection will pass through the focus. Rays passing through the focal point reflectrefract parallel through the axis. Mirrors and lenses ray diagrams worksheets lesson plan template and teaching resources. Feb 05, 2016 the concept explanation helps understand clearly how to draw the ray diagrams for a convex mirror for different positions of an object, and how to get the correct images and positions of images. The most convenient way to create a ray diagram with spherical mirrors is to draw 3 strategic rays.
Every observer would observe the same image location and every light ray would follow the law of reflection. Concave lens and ray diagrams examples, solutions, videos. Traditionally, the nature of the image is studied by means of a combined methodology of the ray diagram construction and a sign analysis of the mirror equation. Incident rays at least two are drawn along with their corresponding reflected rays. 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 mirrors front, convex surface. Convex mirror is a curved mirror for which the reflective surface bulges out towards the light source. Indeed, here is the ray diagram for a concave mirror. Explore more about concave mirror ray diagram, convex mirror ray diagram and much more at.
Use the height determined above as the height of the object on your ray diagram. A light source very far away from your mirror will produce rays that are prettymuch parallel when they strike the mirror. Students found these useful as they contain key rules to follow. Construction of ray diagrams in geometrical optics. Convex mirrors the main difference between concave and convex mirrors is the most easily seen by considering how they reflect. To explain the experiment in the observational experiment table 22. 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. Rays parallel to the axis are reflectedrefracted through focal point 2. Through the focal point to the mirror the ray will reflect parallel to the principle axis. You may note in these diagrams that the back of the mirror is shaded. Drawing a ray diagram is a great way to get an idea about whats going on. Question 2 the image formed by a convex mirror is seen to be erect,virtual and diminished. The second principal ray occurs when light comes in through the focus, then it comes out parallel to the principle axis.
Move the tip of the object arrow to move the object. Image formation by convex and concave lens ray diagrams. Ray diagrams for the convex mirror basic physics tutorials. 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. Ray diagrams for concave mirrors were drawn in lesson 3. The concept explanation helps understand clearly how to draw the ray diagrams for a convex mirror for different positions of an object, and how to get the correct images and positions of images. Focal length and object height are both controlled with the sliders. Rays passing through the center of lens are undeflected. The physics classroom combines words, graphics, and animations to explain how to construct ray diagrams for concave mirrors. The following diagrams show the ray diagram for a concave lens. Read from lesson 4 of the reflection chapter at the physics classroom. In this lab, you will construct the three ray diagrams for diverging mirrors. Since the light refracts through the lens, and doesnt bounce off, like a mirror, when drawing ray diagrams, there is one difference. Principal ray diagram of a flat mirror college of science.
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. Learn quiz ray diagram with free interactive flashcards. Ray diagrams concave and convex mirrors light cbse. In this lab, you will construct the six special ray diagrams for a converging, or concave, mirror. This is the type of information that we wish to obtain from a ray diagram. Change the location of the object and use the ray diagrams to determine the location of the image. If youre seeing this message, it means were having trouble loading external resources on our website. Remember that all light rays parallel to the axis of the mirror will pass through the focus. I wonder if there is not a mistake for the lens experiment with letters. Concave mirror convex mirror image formation by concave mirror concave mirror ray diagram image formation by convex mirror. Concave mirrors have the focal point f in front of the mirror, and convex mirrors have the focal point behind the mirror. Ray 1 is parallel to principal axis, and reflects through the focal point. The second ray diagram, when the pen was 27 cm in front of the mirror shows an inverted image that is much smaller than the object, agreeing with our computed.
Any ray parallel to the principal axis is reflected as if it had come through the focus, f. Where is the image in this case, and what are the image characteristics. On a separate sheet of paper, answer the following questions 1. In this equation, the symbols d o and d i represent the distances from the mirror to the object and to the image. Always draw a ray diagram with 2 or 3 easyto draw rays. Choose from 361 different sets of quiz ray diagram flashcards on quizlet. Images formed by convex mirror using ray diagram 1 object is between infinity and pole a image is formed between pole and focus. Describe the properties of an image produced by a concave lens. Any line 90 degrees from the mirror, drawn as a dotted line. Thus, the student must recognize not only the geometric construction but also analyse the behaviour of the signs in the equation of the optical system. Parallel to the principal axis to the mirror the ray will reflect through the focal point. Convex mirror is a curved mirror for which the reflective surface bulges out towards the. Concave lenses draw a ray diagram to show how an image is formed by a concave lens. Move the point named focus to change the focal length.
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. The principal axisis the straight line connecting c and the midpoint of the mirror. An image formed by a concave mirror, based on an objects distance from the mirror and the mirror s focal length skills practiced this quiz and worksheet allow students to test the following skills. 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. Frankl your own mind is a sacred enclosure into which nothing harmful can enter except by your promotion.
Worksheet and answers this is the work done on may 31, 2012. There are two types of spherical mirrors convex mirror and concave 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. With this formal knowledge, students will recreate both the convex and concave lens setups followed up by a separate lens setup to represent the anatomyphysiology of the human eye. Snc 2d light and geometric optics convex mirrors extra practice worksheet a draw a ray diagram for each to locate the image. 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.
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