Then you come to the chapter on wave optics, and you are told that light travels as a wave, that it can bend around objects, it can diffract and interfere, etc. Sketch typical fraunhofer diffraction patterns for a single slit, circular aperture, and rectangular aperture, and use equations to calculate beam spread and fringe. Physics notes for class 12 chapter 10 wave optics wave optics describes the connection between waves and rays of light. Waves and optics regular waves and optics worksheets and solutions wr1b. Oct, 2016 board questions from wave optics cbseaissce by admin in ask physics, cbse physics class xi, exam preparation, optics, wave optics on october, 2016. Propagation, interference and diffraction of waves.
Ray optics and wave optics together can bring you 14 marks. Electromagnetic waves, the electromagnetic spectrum and photons opens a modal. Class 12 physics revision notes for chapter 10 wave optics. Notice, you are not being asked for the values of y1. Wave optics propagation, interference and diffraction of waves axel kuhn, oxford 2016 paul ewarts lecture notes and problem sets. For this we have included pdf notes of each chapter still updating. Physics 9b waves, sound, optics, thermodynamics, and. The incident ray, the refracted ray and the normal at the point of incidence all lie in the same plane. Light waves that is, electromagnetic waves behave like other waves.
Physics wave optics mcq translation in hindi, kannada. Wave optics wave front the wave front at any instant is defined as the locus of all the particles of the medium which are in the same state of vibration. Class 12 physics notes on wave optics containing top concepts like wave optics, huygens principle, superposition principle, youngs double slit experiment, diffraction, polarization etc. Topic 4 the wave equation general properties notes and diagrams. Wave optics, also termed as physic optics is the branch of optics which deals with various phenomenon including diffraction, polarization of light, interference pattern in optics and solved problems, youngs double slit experiment etc. The figure is trying to say that electric field at a point is increasing and decreasing oscillating as the light passes by. Let us call the direction in which the wave travels the x axis. Calculate the percentage change in the fringe width in the interference pattern. Huygens principle can be used to derive the law of reflection and the law of refraction. Find materials for this course in the pages linked along the left. In youngs double slit experiment, the separation between the two slits is doubled.
For our purposes, in understanding how optical instruments work, the wave theory of light. Apr 30, 2020 chapter notes wave optics, class 12, physics class 12 notes edurev is made by best teachers of class 12. Optics formulas pdf light is a transverse electromagnetic wave. Wave optics, also referred to as physical optics, is the branch of optics that enables important phenomena such as interference, diffraction, and polarization to be understood. Download the collection of questions asked in previous cbse board exams from the chapter wave optics. Here v 1 and v 2 are the speed of light in media 1 and 2 with refractive index pp 12 and respectively. Ray optics is based on rectilinear propagation of light, and deals with mirrors, lenses, reflection, refraction, etc. The distance between successive wave fronts is the wavelength.
You can determine the wave frequency and period, predict how fast light travels in various materials, and determine how light. It is an eminent branch which assumes great importance as a large number of questions in various. Drawing this figure for a light wave does not mean that light rays move up and down in the air. Brewsters law, lens formula, youngs double silt experiment. Advanced placement physics waves and optics energy. As the wave propagates, let us assume in the positive x direction, any point on the wave pattern is displaced by dx in a time dt see figure 1.
Wave front of a wave, at any instant, is defined as the locus of all the particles in the medium which are being disturbed at the same instant of time and are in the same phase of vibration. Free pdf download of physics class 12 chapter 10 wave optics formulas prepared by expert teachers at. Electromagnetic waves are the only type of wave that do not require a medium at all. To register online physics tuitions on to clear your doubts from our expert teachers and solve the problems easily to score more marks in your cbse board exams. Wave optics class 12 physics india science khan academy. Chapter notes wave optics, class 12, physics class 12 notes. If you are reading the documentation as a pdf file on your computer, the blue. Kindly note that some of these notes are not written by us and they are borrowed from student community. The phenomenon of change in the path of light when it passes from one medium to another.
Read all the important points and chapterwise notes on iitjee. The geometric optical intensity distribution of light in the point image igx,y is expressed by igx,ya. The wave optics module users guide comsol documentation. Prepare the wave optics chapter by using new and important formulae. If this wave enters a pool of water, its wavelength becomes. Preliminaries we have seen that a monochromatic traveling plane light wave can be represented by a sine wave with a welldefined frequency and amplitude moving with a constant. Or aan imaginary surface passing through particles oscillating with same phase is known as. The resultant wave, obtained by applying equation 43 at each point along the x direction.
The electric e and magnetic m fields are perpendicular to each other. A sinusoidal wave of frequency 500 hz has a speed of 350 ms. When two waves of exactly same frequency coming from two coherent sources travels in a medium, in the same direction simultaneously then due to their superposition, at some points intensity of light is maximum while at some other points intensity is minimum. Osa on a comparison between wave optics and geometrical. Because light is a wave, the superposition principle is valid to determine the constructive and destructive interferences for light waves. The next chapter discusses a variety of applications in imaging that stem from these ideas. Visit examrace for more files and information on sampleobjectivequestions. Important topics and formulae in ray optics and wave optics. Ps files in your own filespace and use a dos window to print them directly to. The speed of light in a medium depends upon the nature of medium. Note that the observed laws of geometric optics follow from the assumption that light is a wave.
In addition, you should be able to manipulate and use algebraic formulas. A ray of light is incident from air to glass of refractive index n and is found to be nearly plane polarised after reflection. Physical optics will help you understand the phenomena of light wave. If you would rather have copies of the notes to print out, you may find the pdf or. Let us use the symbol yx, t to designate the displacement or wave disturbance at a position x and at. Waves must travel in a medium with one important exception.
If you were swimming underwater, the light would still appear red. Download for free or view pdf file physics wave optics mcq for competitive exams. Physical optics we now employ our knowledge of wave mechanics to the phenomenon of light. Often, in optics, there are no free charges or currents, so mostly we can assume that 0 and j 0. In this paper the relation between wave optics and geometrical optics is studied by using fourier analysis. The speed v of a wave is given by v t o where is the wavelength of the wave and t 1 is the period of oscillation. 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 frequency remains the same as light travels from one medium to another. Waves optics equations and formulas pdf mymathtables. These notes are aligned with our channels video lectures. Here are some wave formulas that are useful when youre working with optics. They can reflect, refract bend, and interfere with each other. The equation for simple harmonic motion is given by x asin.
Something must be vibrating oscillating in order to create a wave. Please do not write on this sheet phhyyssiicc sffoorrmmuullaa. Once again we will find that while it comes from a very different source from other waves we have studied, and while it has some unique properties we have not seen before, our knowledge of waves still goes a long way. Use the lensmakers equation to determine the focal length of a thin lens. Which travel in all directions with the velocity of light in the medium. Subsequent chapters build on this foundation to develop the wave. James clerk maxwell 18311879 first written down in 1864 e b where is the electric field, is the magnetic field, is the charge density, is the current density, is the. Board questions from wave optics cbseaissce ask physics.
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