For aconcave lens, the lens equation is the same but the value of fis nownegative. All four types of concave lens are diverging lenses. A ray parallel to the principal axis from the tip of the arrow will be bent by the lens as if it had come from the focal point. With these new terms explained, the teacher will demonstrate the basic rules underlying ray diagrams for both convex and concave lenses. Lenses ray diagram construction worksheet teaching resources.
Snc 2d light and geometric optics convex mirrors extra practice worksheet a draw a ray diagram for each to locate the image. Concave lenses draw a ray diagram to show how an image is formed by a concave lens. Ray 2 passes through f before refracting parallel to the axis. Since lenses pass light through them unlike mirrors it is useful to draw a focal point on each side of the lens for ray tracing. Ray 1 is parallel to the axis and refracts as if from f. Examples are given for converging and diverging lenses and for the cases where the object is inside and outside the principal focal length. Ray diagram practice concave mirrors worksheets kiddy math. Rays refract towards optical axis rays refract away from optical axis thinner in the center.
When you focus a camera, you adjust the distance of the lens from the film. 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. The method of drawing ray diagrams for double convex lens is described below. Since the light refracts through the lens, and doesnt bounce off, like a mirror, when drawing ray diagrams, there is one difference. Ray diagrams and diverging lenses the diagrams above show that in each case, the image is located on the object side of the lens a virtual image an upright image reduced in size i. Draw a ray diagram and use the information from the ray diagram to fill in the box. Diverging lenses ray diagrams diverging lenses ray.
Although may also be useful for other boardsalevel answer sheet available. Brief slide show on your topic due wed nov 16 35 slides use images to enhance your slides as appropriate max 5 minutes. Describe the action of a thin converging lens on a beam of light. A diverging lens ray diagram follows three basic rules. Diverging lenses ray diagrams the physics classroom.
Pick a point on the top of the object and draw three incident rays traveling. Use lens equation to find the final image m i 2o i 2i 1 i 1o m 1 x m 2. Ray 1 is parallel to the axis and refracts through f. That is, they diverge parallel rays of light from a focus, producing a virtual image. A ray heading for the focal point on the far side of the lens is bent so that it emerges parallel. The following diagrams show the ray diagram for a concave lens. Any ray of light that is parallel to the principal axis of the lens will pass through its focal point after refraction.
Imaging with two lenses graphical methods parallelray method, find intermediate image, use as object for next lens virtual objects obliqueray method, lenstolens, no need to find intermediate image mathematical methods find intermediate image, use as object for next lens lenstolens sequential raytracinglater. Images with thin lenses washington state university. In this case image will form between f and 2f,image will be real,inverted,smaller than the object. 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. Ray diagrams by constructing a ray diagram, we can determine where the image is located, and what it will look like. This pdf book contain converging and diverging lenses packet answers document. Draw ray diagrams to illustrate the formation of real and virtual images of an object by a lens 4. The method of drawing ray diagrams for a double concave lens is described below. Aug 20, 2015 description of how to draw ray diagrams for diverging lenses for grade 10 science. The socalled nimrud lens is a rock crystal artifact dated to the 7th. A ray diagram is a diagram showing rays that can be drawn to determine the size and location of an image formed by a mirror or lens. 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.
Nov 16, 2012 the ray diagrams for diverging instruments are essentially the same no matter where the object is located. Jun 01, 2015 diverging lenses as such, the rules for how light behaves when going through a diverging lens is a little bit different. The ray diagram constructed earlier for a diverging lens revealed that the image of the object was virtual, upright, reduced in size and located on the same side. Draw scale diagrams to deduce the focal length needed for particular values of magnification. Parallel ray diagrams locating the image of a virtual object. Do ray diagrams apply only to converging lenses,or to diverging lenses also.
The lentil plant also gives its name to a geometric figure some scholars argue that the archeological evidence indicates that there was widespread use of lenses in antiquity, spanning several millennia. Focal point and focal length ray diagram for lenses. In a 3step process, use three principal rays to draw a ray diagram. Ray diagram for lenses if an image is formed, only two rays are necessary to determine the image point. A worksheet to construct ray diagrams to show where images are formed by a converging convex lens and a diverging concave lens. To download free ray diagrams for concave mirrors you need to register. Description of how to draw ray diagrams for diverging lenses for grade 10 science. The word lens comes from lens, the latin name of the lentil, because a doubleconvex lens is lentilshaped.
Since this is conceptual physics, i dont ask them ever to use the thin lens or magnification equation to predict the location and size of an image. Move the point named focus to change the focal length. The description is applied to the task of drawing a ray diagram for an object located beyond the 2f point of a double convex lens. Image formation in a convex lens can be explained with the help of three principal rays shown in the figure. View notes diverging lenses ray diagrams from geo 111 at vilniaus gedimino technikos universitetas. You will be expected to be able to draw a ray diagram of a converging and diverging lens on our upcoming test without the rules. The first principal ray, ray 1, comes off the object parallel to the optical axis, and gets bent so that the ray appears to be coming from the focal point, as shown below. When the physlet opens notice that the author has listed for you the initial focal length, object distance and image distance. The second ray is drawn through the center of the lens and continues. The physics classroom combines words, graphics, and animations to explain how to construct ray diagrams for concave mirrors. Ray diagram practice concave mirrors displaying top 8 worksheets found for this concept some of the worksheets for this concept are ray diagrams for concave mirrors, converging diverging lenses ray diagrams, mirror ray diagram work answers, ray diagrams, ray diagrams for convex mirrors, physics, 1 1 1 h d i i in every problem draw a ray i o. The image formed by a single lens can be located and sized with three principal rays. Thin lens shapes ray diagrams are convenient for locating the images formed by thin lenses or systems of lenses.
A ray diagram is a tool used to determine the location, size, orientation, and type of image formed by a lens. Displaying top 8 worksheets found for concave and convex lenses. Students will be asked to follow along on their worksheets. Ray diagrams diverging lenses verona public schools. Any incident ray of light that passes through the focus of the lens before getting refracted will emerge parallel to the principal axis on refraction. Here are some useful rays in determining the nature of the images formed by converging and diverging lens. Our procedure for diverging lenses is similar to the one presented above for converging lenses. Image formation by convex and concave lens ray diagrams. For each case, draw the 3 principal rays to locate the image. Ray diagrams for thin lenses ray diagrams are essential for understanding the overall image formation. Basic knowledge of converging and diverging lenses. Jun 23, 2015 122 ray diagrams lenses in this video paul andersen explains how ray diagrams for lenses can be used to determine the size and location of a refracted image. Pick a point on the top of the object and draw three incident rays traveling towards the.
Ray diagrams for diverging lenses read from lesson 5 of the refraction and lenses chapter at the physics classroom. The first ray is drawn parallel to the first principle axis and then passes through or appears to come from one of the focal lengths. Where is the final image as shown, two converging lenses, each with a focal length of 10cm, are separated by 50cm. The method of drawing ray diagrams applies to diverging lenses.
Ray 1 is drawn parallel to the principal axis and then passes. Lenses are usually made either of glass or clear plastic and are ground and polished to have spherical surfaces. There is one ray of light passing through the center of the lens. 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. Ray 2 heads towards f before refracting parallel to the axis. Students will then be formally taught lens diagram terminology as well as the ray diagram laws of refraction. Diverging lenses as such, the rules for how light behaves when going through a diverging lens is a little bit different. Simulation of image formation in concave and convex lenses. For a converging lens, the following three rays are drawn. Ray 3 passes straight through the center of the lens. Ray diagrams concave mirrors ray diagrams concave mirrors. Use the thin lens equation to find the distance of the image. Any incident ray traveling parallel to the principal axis of a diverging lens will refract through the lens and travel in line with the focal point i. Lenses ray diagram construction worksheet teaching.
Ray diagram practice concave mirrors displaying top 8 worksheets found for this concept some of the worksheets for this concept are ray diagrams for concave mirrors, converging diverging lenses ray diagrams, mirror ray diagram work answers, ray diagrams, ray diagrams for convex mirrors, physics, 1 1 1 h d i i in every problem draw a ray i o f h d o o. Concave lenses always produce upright, virtual images. Move the point named focus to the right side of the lens to change to a concave lens. The ray passing through the focal point becomes parallel to the principal axis after refraction by the lens. With a concave lens, the image will always be diminished, the right way up and virtual. Ray diagrams object n f image lets check the answer by making a quick ray diagram of the situation. Before continuing to a paperandpencil exercise in which you will construct the two special cases for diverging lenses, we are going to use the following physlet to examine the general properties of images formed by diverging lenses. Ray diagrams are constructed by taking the path of three distinct rays from a point on the object. Object ray parallel to principal axis image ray pointing to a focal point f 2 object ray pointing to the center c image ray inline with the object ray. These three rules will be used to construct ray diagrams.
Explain what is meant by saying that in a telescope one looks at the image of an image. Move the tip of the object arrow to move the object. The three principal rays which are used for visualizing the image location and size are. Chapter assessment 30justinna licea flashcards quizlet. Feedback greatly received particularly constructive ways to improve. Some of the worksheets for this concept are diverging converging lens work, concaveconvex s1 identifying shapes, converging diverging lenses ray diagrams, name box score date ap physics work 14 chapter 24, refraction convex and concave lenses, exploration of. Ray diagrams for diverging lenses the physics classroom. Also draw the image on the ray diagram where the three principle waves converge. Describe the properties of an image produced by a concave lens. Several varieties of two basic forms of lenses exist. Elaboration students will return to their original groups to conduct the elaboration portion of their experiments. Concave lens and ray diagrams examples, solutions, videos. Thin lens equation focal length of a converging lens.
Diverging lenses ray diagrams cbse board papers class 10 2011 physics question 25 b youtube thin lenses drawing ray diagrams pdf solved a draw a ray diagram for the. Ray diagrams for double convex lenses were drawn in a previous part of lesson 5. In this lesson, we will see a similar method for constructing ray diagrams for double concave. Ray diagrams for diverging lenses wiring diagrams free. Concave lenses, geometrical optics from alevel physics. Feb 27, 2015 a worksheet to construct ray diagrams to show where images are formed by a converging convex lens and a diverging concave lens. In mirrors, images are formed through reflection but lenses form images through refraction. Although, may also be useful for other boardsalevel. Please practice handwashing and social distancing, and check out our resources for adapting to these times. The ray diagrams for diverging instruments are essentially the same no matter where the object is located.
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