This book can help to learn and practice a level physics quizzes as a quick study guide for placement test preparation. In the figure, n 1 and n 2 represent the indices of refraction for the two media, and. Determine the index of refraction, given the speed of light in a medium. Contents properties of waves definitions, equations, superposition, phase difference, equation of a wave 3,6 huygens construction introduction, huygens postulate, refraction, interference youngs fringes. Pdf a level questions and answers physics download full. Very helpful for those who want a broad knowledge of physics. Light travels faster in a vacuum than it does in any other medium. To understand the terms reflection and refraction of all waves when we look in a mirror, why is it that the image we see is as we expect. This worksheet ensures that students are comfortable with manipulating snells law and choosing the appropriate refractive indexes to use in questions.
A level physics revision past papers and worksheets mme. The account of snells law went unpublished until its mention by christiaan huygens in his treatise on light. List of limitations and improvements of physics lab experiments 1. All angles are measured from the normal to the mirror surface. A level physics notes download a full set of free revision notes for. A level physics revision science section on refraction. The change in speed is described by the refractive index, n of the. Alevel physics revision notes, videos and more for aqa. Geometrical optics please remember to photocopy 4 pages onto one sheet by going a3a4 and using back to back on the photocopier contents. When light hits a material, three possible things can happen. Reflection and refraction of light o level mini physics. You will be able to learn more about this if you choose to study physics in a level.
A dedicated page to a level physics revision, with past papers, worksheets and practice questions all relevant to the new a level physics exams. The index of refraction for the extraordinary ray is a continuous function of direction. Users are also granted the right to copy the text and modify it for their own use. Geometrical optics please remember to photocopy 4 pages onto one sheet by going a3a4 and using back to back on the photocopier. The angle of refraction can become 90 o and the ray of light travels along the boundary between the two material. Equivalent to american high school diploma subtopics. The best physics as and a level notes, revision guides, tips and websites compiled from all around the world at one place for your ease so you can prepare for your tests and examinations with the satisfaction that you have the best resources available to you. The ray nature of light is used to explain how light refracts at planar and curved surfaces. Reflection and refraction questions practice khan academy.
Categories o level, reflection and refraction of light 5 comments post navigation. Physics revision site recommended to teachers as a resource by aqa, ocr and edexcel examination boards also recommended by bbc bytesize winner of the iop web awards 2010 cyberphysics a physics revision aide for students at ks3 sats, ks4 gcse and ks5 a and as level. Snells law and refraction principles are used to explain a variety of realworld phenomena. It is caused by the different speeds of light in different media. The index of refraction for the ordinary ray is independent of direction.
Science class 12 physics india ray optics and optical instruments. Jan 07, 2017 6 videos play all waves a level physics science shorts 8. Download pdf, for addition, correction and inquiry send comment. When waves cross a boundary between two materials, there is a change of speed called refraction. Refraction notes pdf back to a level physics notes page. Physics notes form 3 free download kcse revision notes pdf. Incident ray normal reflected ray angle of incidence angle of reflection mirror. Two readings of d and l not enoughonly two readings too few readings. Light travels through space at a speed of 3x108 ms1 and in straight lines ignoring relativity theory, etc.
Covers quantum waves, sound waves, and light waves. Then the sheet goes on to explain each section in det. In other cases it is traveling through glass and entering air. Refraction, geometrical optics from alevel physics tutor. Although, advance level mathematics is not required. As it turns out, the schrodinger equation applied to two levels in an atom. Downloads the most comprehensive compilation of past papers grouped in categories. The physics classroom website should remain the only website or server from which this document is distributed or displayed. Physics refraction of light through a prism prism is a triangular glass, which has two triangular bases and three rectangular lateral surfaces as shown in the image given below. Reflection this area of physics is frequently considered to be easy and straightforward, this is because. Free revision guides, questions banks and resources. The change in direction or bending of a light wave passing from one transparent medium to another.
It focuses primarily on the wave and ray descriptions of light, but also includes a brief intro. Summary notes, key points, flashcards, videos and past exam questions by topic for edexcel physics as and alevel topic 5 waves and particle nature of. This curriculum was developed for a seniorlevel optics course at brigham young. To measure the refractive index of a material, we pass a beam of light through a boundary between the material and air and measure the angle of refraction. Reflection revision reflection is the bouncing of light rays off a surface reflection from a mirror. Refraction is when light changes velocity when it travels across the boundary between two materials. Alevel physics advancing physicsrefraction wikibooks. Ace your physics here with revision notes and practice questions for gce oa level. For even more amazing aqa alevel physics exam prep, dont miss. The laws of refraction and refractive index explained. The summary at the start is taken directly from the specification, with everything you need to know. Reflection and refraction sheet for a level physics.
Worksheets are synchronized to readings from the physics classroom tutorial and to sublevels of the minds on physics internet modules. We expect that the index of refraction will be greater than that of air and a velocity less than. A lens is a piece glass bounced by one or two spherical surfaces. If the direction of the wave is at an angle other than. The speed of light is determined by the medium material through which the light is travelling. In kinematics forces causing motion are disregarded while dynamics deals with motion of objects and the forces causing them.
File type pdf answers to refraction woorksheet for physics light, sound, and the nature of reality physics of waves. The phenomenon occurs if the angle of incidence is greater than a certain limiting angle, called the critical angle. The change in speed is described by the refractive index, n of the material. Use these to help revise for exams and to read through as you go along to build understanding. At the critical angle c, the angle of refraction is 90, as any smaller angle of incidence will result in refraction. Light can bounce off the surface of the material reflection. Sheets to help students to learn and revise reflection and refraction for a level physics. Optical fibres the refractive index of the glass fibre the core must be higher than that of the plastic coating the cladding for total internal reflection to occur this type of optical fibre is called a stepindex fibre because the refractive index increases in a step from the air on the outside, to the much higher value of the cladding, to the even higher value of the core. Refraction a2levellevelrevision, physics, particles. A good knowledge of basic physics and some wellrounded mathematics is recommended. A level physics mcqs multiple choice questions and answers mcqs. Alevel help sixth form college application personal statements what you need to know before doing an epq study habits of a students. Pdf a level physics questions and answers pdf a level physics questions by topic kidney questions with markschemes a level physics revision a level physics revision edexcel a level physics revision guide a level physics revision notes a level physics revision notes pdf a level physics textbook pdf a. Refraction is the change of direction of wave that occurs when its speed changes.
The book is intended for a level courses which is an ukbased syllabus, but it can be adapted for suitable needs. The image and the object are equal distances from the mirror. The physics classroom grants teachers and other users the right to print these questions for private use. Refraction and lenses the following downloadable pdf files represent a collection of classroomready worksheets pertaining to the topic of refraction and lenses.
We have included a link to the pdf near the bottom of this page. Refraction absolute refractive index is a measure of optical density n so the smaller the n of a substance, the greater the speed of light in that substance. Download pdf, for correction, addition and inquiry send comments. The bending of the stick is a very common example of refraction. List of limitations and improvements of physics lab. An example to understand this better is that of placing a strawstick in a glass of water wherein it to be bent when viewed from any other angle than 90 0 to the surface. Refraction through the lenses alevel digital teachers uganda. Also offering past papers and exam questions by topic for aqa, edexcel and ocr. Light rays travel in different mediums at different speeds. Refraction of light rays, examples and solutions physics.
Ocr as and a level physics a delivery guide waves lr7. Notes, flashcards, videos and past exam questions by topic for aqa physics alevel section 3 waves. The critical angle is the minimum angle of incidence, for a given material, at which rays of light are totally internally reflected. When a ray of light goes from a material into an optically less dense material like air. In some cases the ray is traveling through air and entering glass. Reflection of waves reflection and refraction aqa gcse. Setting these equal, we can solve for the index of refraction of the honey.
The idea lingers in the term optical density, a property of a material that the index of refraction measures. Booklet of questions were compiled from past paper questions from 2002 2009 from old scheme this is a work in progress. Refraction revision refraction is the bending of light when it enters from one transparent medium into another. Apr 08, 2015 the best physics as and a level notes, revision guides, tips and websites compiled from all around the world at one place for your ease so you can prepare for your tests and examinations with the satisfaction that you have the best resources available to you. Waves including sound and light can be reflected at the boundary between two different materials. Alevel physics advancing physicsrefraction wikibooks, open. The physics of polarization egidio landi deglinnocenti department of physics and astronomy university of florence, italy. First law of refraction states that the incident ray. Help with gcse physics, aqa syllabus a as level and a2 level physics. It is a lens which is thicker in the middle than at the edges. Focusing on snells law and the change in direction of waves. Pearson edexcel level 3 advanced gce in physics 9ph0. A good knowledge of basicphysics and some wellrounded mathematics is recommended. Refraction through the lenses alevel digital teachers.
Experiments on refraction, reflection and total internal reflection this video includes some basic experiments on reflection. On each diagram, sketch the approximate path of the light in the second medium. The angle between the normal and the refracted ray of light is known as the angle of refraction r. One of the most important parameters that measures optical properties of a. The two indices of refraction are equal only in the direction of an optic axis.
When this happens the angle of incidence is called the critical angle q c. Click to read the comprehensive a level physics revision notes. Dec 25, 2015 refraction of light is the change in direction bending of light rays when it passes from one optically transparent medium to another. Total internal reflection, in physics, complete reflection of a ray of light within a medium such as water or glass from the surrounding surfaces back into the medium. The greater the optical density of the medium, the slower the speed of light. The law of reflection angle of incidence angle of reflection note. Contents properties of waves definitions, equations, superposition, phase difference, equation of a wave 3,6 huygens construction introduction, huygens postulate, refraction, interference. Feb 22, 2017 6 videos play all waves a level physics science shorts ultrafast electron diffraction. We also provide a pdf that teachers can use under the same conditions. Preface this book provides an introduction to the eld of optics from a physics perspective.
Refraction the change in direction or bending of a light wave passing from one transparent medium to another. If the direction of the wave is at an angle other than the normal line, then a change in direction occurs. Refraction is a phenomenon that is exhibited by wave when it travels from one medium to another. Refractive index between two media, 1n2 is a ratio of the speed of light in material 1 to that in material 2 1. Refraction through the lenses alevel ragena march 19, 2020 08. In vacuum, for example, light travels at the speed of 3.
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