Photons exhibit wave properties under refraction or interference. Topics covered include re ection and transmission at boundaries, dispersion, polarization e ects, di raction, coherence, ray optics and imaging, the propagation of light in matter, and the quantum nature of. Newton criticised this theory which had longitudinal vibrations of an ether, by pointing out that the double refraction from iceland spar showed that longitudinal vibrations couldnt exist modern expression. Lesson plan on physics this lesson plan demonstrates the use of research, writing, and learning skills in analysing concepts associated with the topic of revolutions in modern physics. Scientists feel more confident when using more than one model to explain a phenomenon paper 1. However, a wave can pass through both slits simultaneously and interfere with itself. Describe an experiment that demonstrates the wave nature of light. Since the ib exam is quickly approaching in may 2018, it is imperative that students arrive in year 2 with an organized year 1 binder. International baccalaureate diploma programme subject brief. With the physics classrooms question bank, you will be able to create, edit, and perfect that next test in considerably less time. Final practice exam answer key 3 of 41 grade 11 p hysics 30s fi a p ac. The physics of waves version date february 15, 2015. Light is modeled as a transverse wave rather than a longitudinal wave a because light can travel through a vacuum. The physics classroom serves students, teachers and classrooms by providing classroomready resources that utilize an easytounderstand language that makes learning interactive and multidimensional.
A common curriculum model applies to all the diploma programme group 4 subjects. Sir isaac newton believed that light was a stream of particles. Both wave and particle models can explain all the properties of light c. Use the correct answer from the box to complete each sentence.
The percentages refer to the approximate amount of content time spend on each topic. If the wavelength is short, the waves spread out very little, whereas longer wavelengths spread out more. The pdf version of the complete toolkit contains all the resources with full descriptions in a printerfriendly format. The physics classroom grants teachers and other users the right to print this pdf document and to download this pdf document for private use. The ib diploma programme dp is a rigorous, academically challenging and balanced. A photon is a quantum of electromagnetic radiation light. Physics sample 4 version 3 may 2017 section a ot d o n o t w r i t e i n t h i s a r e a d o n o t w r i t e i n t h i s a r e a question 5 a metal sphere has a charge of 1. We discussed the welldefined shadows generated when light is blocked by an object. The experiment is performed in a completely dark room so that very low levels of light can be observed. Light waves vce the question of what is light was a matter of great debate during the 17th and 18th century. The theory was spread most significantly by robert hooke and christiaan huygens in the 17th century. You may not use your own scientific calculator or calculator manual.
Even more important, though only touched on in this book, is the wave phenomenon of quantum mechanics, built into the fabric of our space and time. Spacing between the slits is small, and thus, there is no small angle approximation, as the angular separation of. Past papers of homecambridge international examinations cie. This practice book contains one actual fulllength gre physics test testtaking strategies become familiar with test structure and content test instructions and answering procedures compare your practice test results with the performance of those who took the test at a gre administration. In this article, i will go over the topics covered in ib biology standard level and ib biology higher level, as well as the number of hours dedicated to each topic along. A wave is a disturbance that propagates through some material medium or space. Which of the following correctly describes the change, if any, in the speed, wavelength and frequency of a light wave as it passes from air into glass. Figure 1 white surface concrete 1 a the pizza oven is designed to stay hot for a long time.
Answers chapter 1 section checkups section 11 the atom 1. When the wave meets the boundary between two different mediums it is partially reflected and partially refracted. Wave model of light pdf version of complete toolkit. Sunsets can be explained using the wave model of light. By thinking of light as an oscillating wave, we can account for properties of light. Writing good quizzes and tests for your physics course just became a whole lot easier and a whole lot faster. Wavelength is explored more in the labs for this topic. Mass kg electrons 10 32 kg visible universe 1050 kg length m radius protons 10 16 m radius visible universe 1026 m time s passage of light across. Ib exam questions waves part ii past wave test part ii. These notes are ideal preparation for unit tests as well as the final ib exams. We have provided all the necessary resources and links for the activity on the science portal for ontario teachers spot website.
The wave theory of light was the way we first understood light. Jul 23, 2004 huygens was the first creator of an explicit wave theory of light, in the late 17th century. Past papers of homecambridge international examinations cieigcse physics 06252015 jun papacambridge home cambridge inter. When light is shone onto the backs of the slits, they act as point sources which are initially exactly in phase. Course syllabus is subject to change learning objectives at the end of this certification program, you will be able to. The polarization of light refers to the orientation of the oscillation in the underlying electric field. The ultraviolet catastrophe of blackbody radiation c. The wave model of light demonstrates that waves incident on to the boundary between two media can partially be reflected and partially be transmitted.
Over the summer, students should ensure that all dividers are appropriately labeled and all looseleaf papers are filed in their respective dividers in your year 1 binder. Learning objectives and relevant standards are also included in the pdf version of the complete toolkit. Why maths teacher call for a thief 420 420 give reason. The light waves emerging from the two slits then interfere and form an interference pattern on the viewing screen.
If you are looking at this syllabus, youre likely interested in taking the course or are currently enrolled in the course. Different properties of light can be more clearly explained by using one of the wave or particle models d. Jul 10, 2007 the wave model describes how light propagates in the same way as we model ocean waves moving through the water. S3p2 outline the geometry of a twopointsource interference pattern, using the wave model. The physics classroom distributes a question bank to accompany the physics classroom website. Wave and particle nature of light 1 interference pattern this demonstrates the wave nature of light. When wave reflection occurs, the incoming wave approaching the barrier is called what. This is a closed book exam, but three 812x11 sheets both sides are allowed. Photons exhibit wave properties under its emission or absorption. Manual of safety and health hazards in the school science laboratory.
You may refer to a single handwritten note sheet on 81 2 00 0011 paper doublesided that you brought with you. The agreement of the results seems to show that light and magnetism are a ections of the same substance, and that light is an electromagnetic dis. Wave and particle nature of light 2 emission spectra. Light is a transverse wave polarization only occur to transverse waves. It explained the laws of reflection and refraction of light at an interface. This nes profile provides information about the test, including the approximate. In this exercise the interference and diffraction of light passing through narrow slits. Learn vocabulary, terms, and more with flashcards, games, and other study tools. This website is created solely for jee aspirants to download pdf, ebooks, study materials for free.
Youngs double slit experiment is basically where two slits act as point sources, and form a diffraction pattern, thus demonstrating the wave nature of light. A wave can make a leaf bob up and down on the water, but it cannot move the leaf toward the shore. Paper 2 tests knowledge of the core only for students at sl and the core and. Light and electromagnetic waves high school physics. Both wave and particle models can explain all the properties of light. Dec 16, 2015 on this page you can read or download wave theory of light 12th physics pdf in pdf format. Physics 3 midterm exam solutions october 21, 2014 the exam is 80 minutes in length. The refraction indices, n, represent the factor by which light is slowed down within a refractive medium compared to its velocity in vacuum. The contradiction between the universal speed of light and galilean transforms. Apply the wave model of light to describe phenomena such as interference. If a model passes this test, we gain confidence in its accuracy. Do not open this examination paper until instructed to do so.
Youngs experiment is performed using a white light source with a red filter placed in front of it. When light passes through a small opening, the waves spread out. If you think the materials are useful kindly buy these legally from publishers. This formula is just a special case of v l f, which states that the speed of a traveling wave is equal to the product of its wavelength and its frequency. Communication using both sound locally and electromagnetic waves near and far involve wave. Properties of waves, the concept of frequency, and the electromagnetic spectrum. The frequency of a wave is a measure of the number of waves made by a source each second, or the number of waves that pass through a particular point in the medium each second. The extended essay in physics must be a research paper involving an hypothesis or a model, or a critical analysis which demonstrates argumentation, comparison, or the extraction of relevant information or data. At the end of the booklet there is a collection of equations you might find helpful for the exam. Ib exam questions waves part ii past wave test part ii past wave test. The radio reception temporarily fades due to destructive interference between the waves travelling.
A clean copy of the physicsdata booklet is required for this paper. It is important to have a general awareness what scales such objects deal with. Since these waves consist of oscillating electric and magnetic fields which can exist in empty space, light can travel through a vacuum. Christian huygens proposed that light travelled as waves. The emerging light then arrives at the second screen which has two parallel slits s s0 1 and s2. The pdf version of the teacher toolkit on the topic of the wave model of light iis displayed below. The bohr model has a central nucleus consisting of protons and neutrons orbited by electrons at varying distances from the nucleus. Maxima are sharp and bright, as there is a large number of slits causing constructive interference. The wave model of light toolkit provides teachers with standardsbased resources for designing lesson plans and units that pertain to such topics as the light s wavelike behaviors, wave particle duality, light wave interference, and light polarization. In this practical the input and output of a half wave and full wave rectifier will. Quantum refers to the smallest discrete amount of something. Course syllabus is subject to change no course prerequisites training to be completed through the learning center learn through videos learn through narrated slide shows complete. An electron is the smallest particle of negative electrical charge.
In accordance with our examination of a single sinusoidal wave, we insert. Lets go through another example showing the rectilinear propagation of light. If you dont see any interesting for you, use our search form on bottom v. Each type of wave is determined by changes in the frequency, wavelength, and energy, but these factors always reflect a constant velocity.
Little did newton, huygens, young, and their contemporaries know that the 1802 victory of thomas youngs twoslit interference experiment2 in favor of the wave nature of light. Choose from 500 different sets of wave model of light flashcards on quizlet. Browse 129 examlike subquestions inspired by past ib papers. How can it make sense to use the same word wave for all these disparate phenomena. Learn wave model of light with free interactive flashcards. The c represents the speed of light having wavelength l and frequency f. Quickly assess your understanding of what light is, and the history of those who worked on the wave theory of light, using this multiple choice quiz and worksheet. Any wave on the electromagnetic spectrum will travel at the same constant speed, the speed of light. Light multiple choice concept questions 1 waves diffract most when going through a slit when the wavelength is a large and the slit is large b large and the slit is small c small and the slit is large d small and the slit is small 2 you can hear people around a corner but you cant see them because light. Einstein proposed that light consists of particles called photons. A monochromatic light source is incident on the first screen which contains a slit. Ib physicsoscillations and waves wikibooks, open books for. Frequency is measured in units called hertz hz which is the number of number of wave cycles per second.
A particle could only pass through one slit or the other. The speed of light in the air is 3 x 10 8ms while the refractive index of. Describe an inbuilding network project design process design inbuilding projects using plans, systems and components. The international baccalaureate organization ibo was established in 1968 and is.
Theory of knowledge tok is a course that is fundamentally about critical thinking and inquiry. A wave is a disturbance that travels in a medium e. In historical linguistics, the wave model or wave theory german wellentheorie is a model of language change in which a new language feature innovation or a new combination of language features spreads from its region of origin, affecting a gradually expanding cluster of dialects. Since light can be analysed as a complex mixture of a huge number of individual. Suppose i have an atom that has 4 electrons with spin up and 3 electrons with spin down.
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