Light reflection and refraction notes for class 10. As shown below, an electromagnetic wave is a transverse wave consisting of mutually perpendicular oscillating electric and magnetic fields. There are familiar, everyday sorts of waves in water, ropes and springs. This structure changes shape to focus the light so that we can see clearly. Christian huygens proposed that light travelled as waves. This bundle includes an editable word doc as well as cheat sheet with diagrams. In this sense, gamma rays, xrays, microwaves and radio waves are also light. Objectives aims this chapter is essentially an introduction to the wave theory of light.
In transverse waves the vibration of the particles is at right angles to the direction of energy transport. Electromagnetic wavestheory allen physics download pdf. This led to the remarkable conclusion that light is an electromagnetic wave. Get pdf download of class 12 physics chapter 8 electromagnetic waves class 12 notes, video lectures and more made by expert teachers of vidyakul to score high marks in your exams. Light waves travel in straight lines away from the light source until the waves hit something. These rolling waves are a combination of compressional and transverse waves. The light waves emerging from the two slits then interfere and form an interference pattern on the viewing screen.
Your vocal chords sound can not travel in a vacuum. Notes of ch 10 light reflection class 10th science. Light, reflection, and color characteristics of light light is an electromagnetic wave. Study material and notes of ch 10 light reflection and refraction class 10th science. Fermats principles use the principle of superposition for waves to explain. The law of refraction expressed in terms of refractive index, n. Understanding the structure of the eye lessoneye structure and seeing lightnotes outline 1 eye structure and seeing light. Electromagnetic waves those waves which do not require a material medium for their propagation, are called electromagnetic waves, e. Iit jee handwritten notes pdf for class 11 and class12 physics jee notes of alternating current. Light and the eye cmt like questions all lessons page 12 light assessment all lessons page 18. Shedding light on electromagnetic waves teacher notes. Kurtz miller physical science huber heights city schools. When light travels down a thin fibre, it makes only glancing collisions with the walls so that the angle of incidence is greater than the critical angle and no light can escape to the outside of the fibre.
At this stage you should get a basic understanding of the wave model of light, which involves the idea of light as a complex superposition of many component waves, or elementary waves, each with its own wavelength. This means that although they appear to be very different, in fact theyre all made of the same kind of vibrations but at different. Waves a wave is a disturbance that pppg gropagates through space and time, usually with transferrance of energy. Derive the laws of reflection and refraction of light waves using the huygens and. Transverse waves one type of mechanical wave is a trans. The physics of waves version date february 15, 2015. It begins with explaining ideas of superposition of harmonic oscillations leading to physics of travelling and.
There are also some differences especially between the mechanical waves such as waves on strings and sound. You see light through the object, but can not see objects clearly. Sound is compressional, which means it must have a medium. The emerging light then arrives at the second screen which has two parallel slits s s0 1 and s2. We know that light waves can travel through vacuum.
Thses waves are associated with electrons, protons and other fundamental particles. Electromagnetic waves are ultimately produced by an accelerating charge. Sir isaac newton believed that light was a stream of particles. This is why we can see straight beams of light coming from flashlights, car headlights, and the lamps of the lighthouse in the picture. Curriculum guide for light energy this kit also includes the catch it. They are also responsible for transmitting energy in the form of microwaves, infrared radiation ir, visible light vis, ultraviolet light uv, xrays, and gamma rays. The electromagnetic spectrum t e harrington middle school. Light waves can interfere with other light waves, canceling or amplifying them. Light travels in straight lines, so if you have to represent. Electromagnetic waves 1 light as waves in previous classes 15a, high school physics, you learned to think about light as rays.
Some of these waves are compressional, and others are transverse. Electromagnetic waves do not need a physical medium. Wave optics describes the connection between waves and rays of light. Transverse waves have vibrations perpendicular to the direction of travel e. Liacos educational media shedding light on electromagnetic radiation teacher notes page 3 of 16 he worked out that these two waves are produced at right angles to. In this lesson we revise the doppler effect, huygens principle, diffraction of light and the photoelectric. Introduction and types a wave is a transfer of energy through a medium from one point to another. Light reflection and refraction notes for class 10 formulas download pdf. Describe the six properties of electromagnetic waves and give everyday examples. The wave equation for light propagating in xdirection in vacuum may be written as where is the sinusoidally varying electric field at position x. Electronicssemiconductortheory allen physics download pdf. Light is a form of energy emitted by set of luminous body and travels along the straight line.
Notes of ch 10 light reflection class 10th science 09 aug, 2017 study material and notes of ch 10 light reflection class 10th science. Here you can download the free lecture notes of electromagnetic theory pdf notes emt pdf notes materials with multiple file links to download. Remember tracing light as lines through a curved lens and seeing whether the image was inverted or right side up and so on. Class 12 physics chapter 8 electromagnetic waves notes pdf download electromagnetic waves are used to transmit longshortfm wavelength radio waves, and tvtelephonewireless signals or energies. Year 9 physics waves, light, sound, mirrors, lenses fact. How can it make sense to use the same word wave for all these disparate. I used this cheat sheet with a lower ability class which allows them to look through the notes.
Due to snells law, light of different polarizations will bend by different amounts at an interface. The light emitted by stars, which are hundreds of light years away, reaches us through interstellar space, which is practically a vacuum. However, the energy imparted by the waves is absorbed at single locations the way. Light and sound notes thomas county school district. Thanks for these notes but can you plz make all into a single zippdf it might do a. 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.
Reflection occurs when light strikes an object and bounces back. Section 4 teacher background notes these science content background notes were created for teacher use only. Other waves called electromagnetic waves can travel either through matter or through empty space. While a mechanical wave exists in a medium which on deformation is capable of producing elastic restoring forces waves ofproducing elastic restoring forces, waves of. A line drawn in the direction of propagation of light is called a ray of light. Curriculum guide for light energy wallingford schools. This chapter is essentially an introduction to the wave theory of light. The most familiar type of waves such as waves on a string, water waves, sound waves, seismic waves, etc. A monochromatic light source is incident on the first screen which contains a slit. The wave motion is a means of transferring energy from one point to another without there being any transfer of matter or substance between these points.
Absorption occurs when light strikes an object and can no longer be seen. Matter waves these waves are commonly used in modern technology but they are unfamiliar to us. In bright light, the iris expands and the pupil gets smaller in low light, the iris contracts and the pupil gets bigger. There are many common elements to all the various types of wave motion that can be described and these will be pointed out. Like all types of em radiation, visible light propagates as waves. Examples include radio waves, microwaves, infrared waves, light waves, ultraviolet waves. Examples include waves in water, seismic waves, sound waves, and vibrations in strings the energy of a mechanical wave is a function of its amplitude. The nature of light as a wave a small disturbance in an electric field creates a small magnetic field, which in turn creates a small electric field, and so on light propagates itself by its bootstraps. At this stage you should get a basic understanding of the wave model of light, which involves the idea of light as a complex superposition of many component waves, or. Gcse revision notes physics revision notes waves 1. More familiar types of waves are sound, or waves on a surface of water. This raytracing business is known as geometrical optics. There are less visible but equally pervasive sound waves and electromagnetic waves. Have each group, with notes and manuals closed and.
In these waves and optics notes pdf, you will study the concepts of waves and optics learnt at school from a more advanced perspective and goes on to build new concepts. Notes for electromagnetic waves chapter of class 12 physics. Light reflection and refraction class 10 notes vidyakul. Hertz, in 1885, experimentally demonstrated the existence of electromagnetic waves. A group of rays of light emitted by a source of light is called a beam of light. Maxwells work thus unified the domain of electricity, magnetism and light.
The nature of light uw madison astronomy department. How light travels light waves ks3 physics revision. Waves class 11 notes physics chapter 15 learn cbse. Chapter 7 propagation of light waves rit center for. Characteristics of wave the characteristics of waves are as follows. According to wave theory of light, the light is a form of energy which travels through a medium in the form of transverse wave motion. Light waves vce the question of what is light was a matter of great debate during the 17th and 18th century. The seismic waves that cause most damage to buildings are a kind of rolling waves. Review the waves notes from chapter 10 in our textbook see attached paper. Vidyakul light reflection and refraction class 10 notes were made by expert teacher to help students in revision for board exam.
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