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Wavefront A wavefront is defined as the continuous locus of wave optics class 12 pdf download the particles of a medium, which are vibrating in the same phase. It is used to obtain two coherent dpf from a single light source.
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Fringe Width The distance between the centres of two consecutive bright or dark fringes is called the fringe width. When ordinary light is passed through a tourmaline, calcite or quartz crystal the transmitted light have electric vectors in a particular direction parallel to the axis of crystal.
The envelope of secondary wavelets represents the new position of a wavefront. The wave optics class 12 pdf download between the centres of two consecutive bright or dark fringes is called the fringe width. The interference taking place at points of minimum intensity is destructive interference.
The interference taking place at points of maximum intensity is called constructive interference.
In anyone phenomena only its one nature appears. When distance of screen D is very large compare to the distance between the slits dthe Cringes are straight.
If two waves of exactly same frequency and of amplitude a and b interfere, then amplitude of resultant wave is given by. When a polariser and analyser are perpendicular wave optics class 12 pdf download each other, then intensity of transmitted light from analyser becomes O.
All particles on a wavefront behaves as a wave optics class 12 pdf download source of light, which emits secondary wavelets. All pdf files or link of pdf files are collected from various Resources Or sent by Students. The theory failed as it could not explain why light travels faster in a rarer medium than wavw a denser medium. Aave are not responsible for any type of mistake in data. According to wave theory of light, the light is a form of energy which travels through a medium in the opics of transverse wave motion.
Wave Optics Wave optics describes the connection between waves and rays of light.
Class 12 Physics Notes on Wave Optics – Notesgen
This phenomena of redistribution of energy due to superposition of waves is called interference of light waves. Opticals are in the form of Collimating lens and focusing lens are required. The size of corpuscular of different colours of light are different. Energy remains vownload during interference. The phenomena of restructuring of electric vectors of light into a single wave optics class 12 pdf download is called polarisation.
The theory could explain reflection and refraction. Wave optics describes the connection between waves and rays of light. The speed of light in a medium depends upon the nature of medium. Chapter 5 Electro Magnetic Waves. They protect the eyes from glare.
Fringes are sharpand well defined. This phenomena is called double refraction.
NCERT Solutions for Class 12 Physics Chapter 10 – Wave Optics
When two similar waves propagate in a medium simultaneously, then at any point the resultant displacement is equal to the vector sum of wave optics class 12 pdf download produced by individual waves. When seen with the help of polarized spectacles, create three dimensional effect.
This property of crystal is called dichroism. Such a mind shield protects the eyes of the driver of the automobile from the dazzling light of the approaching vehicles.
Diffraction The bending of light waves around the corners of an obstacle or aperture is called diffraction of light. The phenomenon of diffraction is divided mainly in the following two classes a Fresnel class b Fraunhofer class.
It could not explain interference, diffraction, polarisation. When screen is downlozd at to the wave optics class 12 pdf download joining foci of the hyperbola, the fringes are circular. The bending of light waves around the corners of an obstacle or aperture is called diffraction of light. A wavefront is the locus of all the particles vibrating in same phase.
Superposition of Waves Oprics two similar waves propagate in a medium simultaneously, then at any point the resultant displacement is equal to the vector sum of displacement produced by individual waves. When source of light is a point source,the wavefront is spherical. When two light waves of similar frequency having a zero or constant phase difference propagate in a medium dwonload in the same direction, then due to their superposition maximum intensity is obtained at few points and minimum intensity at other few points.
Class 12 Physics Revision Notes for Chapter 10 – Wave Optics
When a beam of completely plane polarised light is incident on an analyser, the intensity of transmitted light from analyser wave optics class 12 pdf download directly proportional to the square of the cosine of the angle between plane of transmission of analyser and polariser, i. A wavefront is defined as the continuous locus of all the optcis of a medium, which are vibrating in the same phase. They help to control the dpwnload entering through the window.
This light is plane polarised light. Few double refracting crystals have a property of absorbing one of the two refracted rays and allowing the other to emerge out. It is a combination of two prisms of very small optis angles placed base to base. Every effort has been made to ensure accuracy of data on this web site. Wave optics class 12 pdf download Click on G-plus or Facebook. Ordinary light has electric vectors in all possible directions in a plane perpendicular to the direction of propagation of light.