Light consists of very tiny, elastic, rigid particles known as corpuscular. But we had learnt all waves have common characteristic properties such as. Light is a transverse, electromagnetic wave that can be seen by the typical human. Std 12 hsc syllabus have two topics on wave optics. In the given figure, ab is the wavefront incident on a reflecting surface xy with an angle of incidence i as shown in figure. Download cbse class 12th revision notes for chapter 10 wave optics in pdf format for free. Students can download ncert physics book class 12 part 1 pdf download and ncert physics book class 12 part 2 pdf download by simply visiting. Mar 05, 2019 class 12 physics notes chapter 10 wave optics. This is illustrated by the wave model of light and the particle model of light, which together describe the waveparticle duality in which light is understood to possess both wave and particle functions. Sir issac newton was a strong advocate of the particle nature of light. However, in a letter sent a year later on july 12th, his friend and protector arago admitted that i do not know of any book that describes all the experiments on light. Wave theory of light definition of wave theory of light by. Interference is described using real and complex numbers in anticipation of quantum mechanics.
Cbse notes class 12 physics wave optics aglasem schools. Lets transform the solution for the wave equation into real space and time, assume time harmonic field ez,t reeej. In order to observe the wave behavior of light, the slit size and separation should be comparable or smaller than the wavelength of light. Light and its nature have caused a lot of ink to flow during these last decades. The physics of waves version date february 15, 2015. 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.
These corpuscles on emission from the source of light travel in straight line with high velocity when these particles enter the eyes, they produce image of the object or sensation of vision. Ncert solutions for class 12 physics chapter 10 wave optics. Class 12 physics revision notes for chapter 10 wave optics. Wave theory of light history, huygens propostions and more. Wave theory of light lecture 1, hsc std 12, maharashtra board. According to huygens wave theory, luminiferous ether medium exists everywhere in the universe even in vacuum which is treated as material medium for propagation of light waves. Hsc physics wave theory of light free download as powerpoint presentation. We discussed on the secondary wavelets, the primary wavefront and the secondary wavefront. Wave theory of light classroom lecture by pradeep kshetrapal. The wave structure of matter wsm explains huygens principle. Wave theory newtons corpuscular theory of light states that when light corpuscles strike the interface of two media from a rarer air to a denser water medium, the particles experience forces of attraction normal to the surface. Nov 24, 2015 on this page you can read or download wave theory of light 12th problam in pdf format. Wave theory of light by huygens, fresnel, young, etc in geometric optics we learnt light is a stream of straightgoing particles newton proposed that first then we learnt light is a form of em wave. Dec 16, 2015 on this page you can read or download wave theory of light 12th physics pdf in pdf format.
These are the wave optics class 12 notes prepared by team of expert teachers. In 1816 andremarie ampere gave augustinjean fresnel an idea that the polarization of light can be explained by the wave theory if light were a transverse wave. Wave optics describes the connection between waves and rays of light. Oct, 2017 the wave theory of light, proposed by dutch physicist christian huygens in 1678, has stood the test of time and is today considered one of the backbones of optics. The class 12 physics cbse ncert free pdf download is primarily designed for students who are preparing for their upcoming class 12 cbse board exams. Jul 31, 2014 please use one of the following formats to cite this article in your essay, paper or report. Apr 22, 2019 a wave is a vibratory disturbance in a medium which carries energy from one point to another point without any actual movement of the medium.
Definition of light before going into the wave theory of light, lets learn about light itself. Mechanical waves those waves which require a material medium for their propagation, are called mechanical waves, e. Wave theory of light class 12 hsc maharashtra board aamir sir. Know more about these in wave optics class 12 notes. Download revision notes for wave optics class 12 notes and score high in exams.
Ncert physics class 12 free download pdf 2020 updated. Other articles where wave theory of light is discussed. Youngs double slit experiment shows clearly that light is a wave. You may be aware by now that light is a form of energy. Chapter 10 will shift from ray optics to wave optics. The transverse nature of light can be demonstrated through polarization. May 26, 2014 study material 12th physics wave theory of light 1. But, the dutch physicist, christiaan huygens believed that light was made up of waves. The wave nature of light was first illustrated through experiments on diffraction and interference. Hence, the normal component of velocity increases while the component along the surface remains unchanged. Augustin fresnel and the wave theory of light photoniques.
Coupled wave theory for thick hologram gratings landmark. The oscillations are normal to the direction of wave motion along the string, so this is an example of transverse wave. S3p212 compare the velocity of light in a refractive medium predicted by the wave model with. Einstein, 1954 in fact it is possible for a finite spherical universe to form within an infinite space. When the corpuscular theory failed to adequately explain the diffraction, interference and polarization of light it was abandoned in favour of huygens wave theory. Physics notes for class 12 chapter 10 wave optics wave optics describes the connection between waves and rays of light. The modified theory is called plancks quantum theory and the packet of energy is treated to be the fundamental particle of light known as photon. We can prove the laws of reflection on the basis of huygenss wave theory as follows. Ncert solutions class 12 physics chapter 10 wave optics. The wave theory and the particle theory of light were long considered to be at odds with. Jun 24, 20 light and its nature have caused a lot of ink to flow during these last decades. Phys 201 lecture 18 wave theory of light open yale courses.
The theory remains valid for large diffraction efficiencies where the incident wave is strongly depleted. The wave theory of light proposed by christian huygens has stood the test of time and today, it is considered the backbones of optics. 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. If the string is very long compared position as the pulse or wave passes through them. On this page you can read or download wave theory of light 12th problam in pdf format. As we will see, the wave model could satisfactorily explain the phenomena of r eflection and r efraction. Dec 24, 2019 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.
The theory was spread most significantly by robert hooke and christiaan huygens in the 17th century. The wave theory of light was the way we first understood light. Like all electromagnetic waves, light can travel through a vacuum. Study material 12th physics wave theory of light 1. Here, in the article, let us discuss the wave theory of light in detail. The speed of light in a medium depends upon the nature of medium. Laws of reflection on the basis of huygens wave theory. Another supporter of the wave theory was leonhard euler. Wave optics class 12 notes physics mycbseguide cbse. If you dont see any interesting for you, use our search form on bottom v. Wave nature of light study material for iit jee askiitians. However, michelsons and morleys theory disapproved the existence of ether medium. How can it make sense to use the same word wave for all these disparate phenomena. Its dual behavior is partly explained by 1doubleslit experiment of thomas young who represents the photons motion as a wave and also by 2the photoelectric effect in which the photon is considered as a particle.
Feb 21, 2018 in this physics video lecture in hindi we explained huygens principle or huygens wave theory of light. On this page you can read or download wave theory of light 12th physics pdf in pdf format. Hsc physics wave theory of light light luminiferous. It will go into details of wave optics, huygens principle, refraction and reflection of plane waves using huygens principle, polarisation, interference of light waves and youngs experiment, and the application of wave optics like in 3d glasses, etc. Light consists of very small invisible elastic particles which travel in vacuum with a speed of 3 x 10 8 ms. Christiaan huygens, thomas young, augustin jean fresnel, franaois arago created date. Class 12 physics revision notes for chapter 10 wave optics free pdf download. Studymaterial for the wave theory of light, maharashtra class 12science physics, physics. A coupled wave analysis is given of the bragg diffraction of light by thick hologram gratings, which is analogous to phariseaus treatment of acoustic gratings and to the dynamical theory of xray diffraction. He argued in nova theoria lucis et colorum 1746 that diffraction could more easily be explained by a wave theory. Light always piqued the curiosity of thinkers and scientists. Newtons theory was predominant for more than 100 years and took precedence over huygens wave theory of light, partly because of newtons great prestige.
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