Displaying all worksheets related to geometric optics. It is interference that causes diffraction the bending of light around obstacles. When you look at this page, too, you are seeing light reflected from it. The ray in geometric optics is an abstraction useful for approximating the paths along which light propagates under certain circumstances. View lab report lenses virtual lab geometric optics. In this course we will use basic algebra and geometry, and therefore a good scientific calculator is required. Geometrical optics, studied in the first year, ignored the wave nature of light and so, in this course, we focus particularly on physical optics where the primary characteristic of waves viz. The image height hi is positive if the image is upright, and negative if inverted, relative to the object. Prisms, geometrical optics from alevel physics tutor.
Deviation, measured in degrees, is the angle an incident ray is turned through after passing through a prismor other optical component. The questions are about reflection, refraction, critical angle, lenses, reflectors, light rays propagating through different mediums, refractive index of materials, etc. The ray in geometric optics is an abstraction useful for approximating the paths along which light propagates under certain circumstances the simplifying assumptions of geometrical optics include that light rays. A guide to geometric optics teaching approach in this series we explain geometric optics.
The acclaimed introductory text to geometrical and visual optics now in full color geometrical and visual optics, third edition is a rigorous, yet approachable text that expertly combines basic optics with clinical application in a way that brings key optometry topics to life. The angle of minimum dispersion derived from first principles. In order to quantify the variation of light speed in different medium, we introduce of an index of refraction n. Geometric optics 3 for objects far from the mirror, the incident rays are parallel and are reected as illustrated in figure 3. Concept questions for physics using phet inquiry based algebrabased physics semester one lessons, clicker questions, and schedule in pdf inquiry based. Physical optics lecture notes pdf 44p this note covers the following topics. Parallel rays striking a concave mirror come together at focal point. Assuming the object height ho to be positive, the sign convention we use are. Geometric optics the part of optics dealing with the ray aspect of light is called geometric optics. Textbooks, laboratory manuals, demonstration, worksheet, activity, websites and good stories.
Geometric and clinical optics opt 232 ophthalmic optics use of technology description. Remember, the real focal point of a lens is behind the lens. These questions may be used to practice for the sat physics test. Society has benefited from the development of a range of optical devices and technologies. A upright, magnified and real b upright, the same size and virtual c inverted, demagnified and real d inverted, magnified and virtual. The geometrical optics workbook out of printlimited availability. Field guide to geometrical optics 2004 greivenkamp.
Geometrical optics is the treatment of the passage of light through lenses, prisms, etc. If you capture sunlight in a mirror or lens you can feel the heat where the sunlight is reflectedrefracted as a real image but you cannot feel the heat where the sunlight is. I also just learned this week about several ebooks for ipad that incorporate videos and animations to enhance learning. In principle, ray tracing can help us to analyze image formation in any given optical system as the rays refract or reflect at all interfaces in the optical train. Nov 08, 2019 quiz worksheet answering mirror questions with equations. Light reflection and refraction worksheets dsoftschools.
If not, maybe you just want to know a little more about your own eyeglasses or contact lenses. This workbook is designed to supplement optics textbooks and covers all the traditional topics of geometrical optics. A spherical concave mirror with a radius of curvature of 40. How prisms refract light to produce spectra and deviate different colours at different angles. If we restrict the analysis to paraxial rays only, then. Optics basics student worksheet answer the following questions. Question an object is located on the optical axis and a distance of 8 cm from a thin conver ging lens having focal length 10 cm. Light and geometrical optics test 1 kaplan 3 passage i questions 16 figure 1 shows a simplified model of the eye that is based on the assumption that all of the refraction of entering light occurs at the cornea. We also acknowledge previous national science foundation support under grant numbers 1246120, 1525057. General physics 2 geometric optics worksheet siena. Geometric and clinical optics opt 232 ophthalmic optics.
Students are directed with the rules for drawing ray diagrams, including examples, for finding the image produced by thin lenses. When an object is placed in front of a plane mirror the image is. Its time to see the light with a unit that focuses on light and geometric optics, including concave and convex mirrors. Snc 2d light and geometric optics convex mirrors extra practice worksheet a draw a ray diagram for each to locate the image. Terms, equations, definitions, and concepts are discussed briefly and explained through a series of problems that are worked out in a stepbystep manner which. This series revises previous knowledge on reflection in plain mirrors. A variety of experiments, worksheets, and online activities are included. How changing the lens radius, index and diameter effects where the image appears and how it looks magnification, brightness and inversion. A light ray from a source goes in a straight line through the air, but when it encounters a lens, prism, or mirror it bends or changes direction. This light and geometric optics unit is suitable for 10th 11th grade. Lab manual lenses virtual lab using phet geometric optics irina golub january 30, 2017 read. If you are planning to go into a veterinary or medical field, you might be helping patients with eye problems.
These reected rays intersect at a point f the focal point and the distance from f to the mirror is the focal length. Understanding how light rays can be manipulated allows us to create better contact lenses, fiber optic cables, and high powered telescopes. Geometrical optics please remember to photocopy 4 pages onto one sheet by going a3a4 and using back to back on the photocopier contents. For a spherical mirror, the focal length is half of the radius of curvature, f. The cornea is a converging lens located at the outer surface of the eye with fixed focal length approximately equal to 2 cm. Geometrical optics, or ray optics, is a model of optics that describes light propagation in terms of rays. The lens we will use in this simulation is a thin doubleconvex lens. Geometrical optics please remember to photocopy 4 pages onto one sheet by going a3a4 and using back to back on the photocopier.
The material in this field guide to geometrical optics derives from the treatment of geometrical optics that has evolved as part of the academic programs at the optical sciences center at the university of arizona. Explain how an image is formed by a converging lens using ray diagrams. By using ray tracing and the law of reflection, you can figure out where the incoming rays are reflected. This is because we observe the processes emission, reflection, scattering at a distance 10cms with bare eyes that are much longer than the wavelength of light 107. In this lab, you will investigate lens optics using the 3ray system parallelfocal, focalparallel, central.
Jan 19, 2017 geometric optics intuition with mirrors and lenses concave convex diverging converging doc physics duration. On the practice worksheet, students practice drawing their own ray diagrams an. Light and geometric optics unit for 10th 11th grade. Archimedes and other ancient greek thinkers made original contributions but we mention here heron of alexandria c. Terms, equations, definitions, and concepts are discussed briefly and explained through a series of problems that are worked out in a stepbystep manner which simplifies the problemsolving process. Formation of images by spherical mirrors sign conventions. Geometric optics converging lenses and mirrors mercer. Quiz worksheet answering mirror questions with equations. The subject of geometric optics is, by definition, mathematical and quantitative. Image the ceiling fluorescent lights onto the floor using a lens. Worksheets are geometric optics, a guide to geometric optics, lecture notes on geometrical optics 021014, shed a little light on light and geometric optics, fundamentals of photonics module 1, geometrical optics, topic 16 geometric optics, waves and optics. Algebra arithmetic geometric or neither geometric mechanics geometric statistics proofs geometric distance to horizon geometric sequences worksheet geometric dimensioning and tolerance algebraic and geometric surgery.
In this set of lab exercises, the basic properties geometric optics concerning converging lenses and mirrors will be explored. General physics 2 geometric optics 16 sign conventions focal length positive for converging lenses negative for diverging lenses object distance positive if the object is on the side of the lens from which the light is coming this is usually the case otherwise, it is negative virtual object. Conceptual physics textbook, laboratory manual, concept development book and cpo physics text and laboratory manual types of materials. Watch how the image changes when you adjust the focal length of the lens, move the object, move the lens, or move the screen. Ncert solutions for class 12 physics chapter 9 ray optics. These lessons have been designed to be used as a teaching tool, either as individual lessons or as a series, or they can be used as a revision tool. Light and geometric optics big ideas light has characteristics and properties that can be manipulated by mirrors and lenses for a range of uses. At least flash player 8 required to run this simulation. Mirror equation problems worksheet with answers pdf.
Iin my geometric and clinical optics class, i use a webbased, interactive demonstration of ray tracing for thin lenses and mirrors. Geometrical optics will help you understand the basics of light reflection and refraction and the use of simple optical elements such as mirrors, prisms, lenses. Student worksheet activities about properties of light, reflection, refraction, reflection or refraction. A lab worksheet that could be used as a theoretical experiment that can help students come to their own conclusions re refraction. Light waves can be bent and reflected to form new and sometimes altered images. Optics questions with solutions and explanations at the bottom of the page. Mir ror s and lenses click er questions question p1. It is meant to be a concise and userfriendly resource for clinicians as they begin their study of optics, and as. For a spherical mirror, the focal length is half of the radius of curvature, f r2. Some of the worksheets below are light reflection and refraction worksheets. Mrsmartinmath licensed for non commercial use only unit. Would like to have pdf files with answers to all the questions on all the worksheets. One of the major ways to illustrate concepts and assess learning is by use of word problems that require one or more calculations.
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