endobj 1. >> 33 0 obj <> A lens can be used to change the shape of wavefronts. stream It is an electromagnetic wave which is transverse in nature which travels with a finite speed given by; A wavefront is defined as the laws of all points of the medium which vibrate in the same phase. x�u�=KA����S�f��w�BP���U@AL�߹x�\��5�����1y�;~`|*�? (a) Each point on a wave front acts as a source of new disturbance and emits its own set of spherical waves called secondary wavelets. �@E����[��q�N�"���v�J�*�ߺ�s�{3��N����� The effect of non-uniform energy distribution in the medium as a result of two light waves being superimposed is called interference. 614235 If one of these is yours, see me pls •! 26 0 obj 28 0 obj YOU bring bubble sheet, pencil, calculator ��\{��I% g�y'���t}���;"� 3Bj�D���3"7�|���[m쉑�g|����0�pa��~v�����D��w0�xw5N:?D��l�**�=������2���\"�1�g�?��F �f��)T0��W0���P <> endobj stream As the medium is supposed to be very dilute and highly elastic, its density would be very low and modulus of elasticity would be very high so that the speed of the light would be very large. In Physics, wave optics or physical optics are a branch of optics in which a phenomenon where ray approximation of geometric optics is not valid such as polarization, diffraction or on interference, etc.. 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Ray Optics Formulaes 1. 8 0 obj 41 0 obj Here we are providing Allen institute wave optics class notes pdf for JEE Main 2018 exam.Download Wave optics class notes pdf free of cost from below and share the post. endobj 29 0 obj endobj The major failure of Newton’s corpuscular theory was that it could not explain why the velocity of light was lesser in the denser medium compared to vacuum. endobj <> <> Know More about these in Wave Optics … This medium is called ether. <> >> >> Class 12 Physics notes Chapter 10 Wave Optics. endobj >> stream You can determine the wave frequency and period, predict how fast light travels in various materials, and determine how light […] ... is known as the wave equation from which he predicted the existence of electromagnetic waves*. Using this theory Newton was able to explain reflection and refraction but failed to explain the cause of interference, diffraction and polarization. Power density is given by Poynting’s vector, P, the vector product of E /Subtype /Form endobj Relation between Refractive indices According to Snell's law By Snell’s law 4. endobj stream endobj All the points are equidistant from the source. >> But is students understand the concepts behind the formulas properly they can enjoy learning the subject. <> [13 0 R] It explained the laws of reflection and refraction of light at an interface. Physics is one of the most feared subjects in class 12 because of its complex theories and physics formulas list. /Length 139 Transverse waves are waves in which the direction is perpendicular to the direction of motion. /BBox [0 0 99.2130 31.8900] When the source of light is linear, the wavefronts are cylindrical in shape. /Subtype /Form <> endobj A perpendicular drawn to the surface of a wavefront at any point, in the direction of propagation of light, is called “wave normal”. 17 0 obj >> /Filter /FlateDecode Revision Notes on Wave Optics. To facilitate this process, we make use of the following complex number to represent the wave field. 39 0 obj 649314 •! This is called “secondary wavefront”. (a) Each point on a wave front acts as a source of new disturbance and emits its own set of spherical waves called secondary wavelets. endobj stream (e.g., paper, ground, glass) <> endobj [40 0 R] x�m�=O1��H��Pc;�H� ����T�J����ɵW�,O��kBce���^r�OH�CV$��S����WNo9=����h@�ȉ��ePA'���E�'���P�~�ݽC{��]m,XT�ټ��BȽ|���$�^���-�O�q�_u��.�TO?s��@$��F��h��D�������zKn�b���:�^ K? <> endobj Important notes of Physics for NEET, JEE for Wave Optics are useful for all aspirants preparing for entrance exams including JEE, NEET. >> It includes all the topics given in NCERT class 12 Physics textbook. Important Ray Optics Formulas 2. According to wave theory of light, the light is a form of energy which travels through a medium in the form of transverse wave motion. 30 0 obj Relation between Refractive indices According to Snell's law By Snell’s law 4. /Filter /FlateDecode ... in the plane transverse to the direction of propagation of light. If a plane wavefront falls on a concave mirror, the shape of the reflected light is spherical. <> x�m�� >> >> ���w�P04�375UI��2T0 BC#=Css einn����e��"�y��5�4u ,,5�5-L4�4cB�x�\��9�M��f���������6@`�� ��a Or Aan imaginary surface passing through particles oscillating with same phase is known as wavefront A point source of light at a finite distance in an isotropic medium emits a spherical wave x�}Q;O1�#�?x�ε�%�H���*&$�2����(��|�3aT /Matrix [2.3223 0 0 2.3906 0 0] >> ��ێ�?�Y These physics formulae helps class 11 and class 12 students in quick revision for CBSE, NEET, IIT JEE Mains, and IIT JEE Advanced. <> Or Aan imaginary surface passing through particles oscillating with same phase is known as wavefront A point source of light at a finite distance in an isotropic medium emits a spherical wave <> >> 6 0 obj Important notes are also helpful for revision when you have less time and have to study many topics. The nature of linear wave equation guarantees that waves can be superimposed: we may combine an array of waves by algebra, as far as each of them are proper solution of the wave equation. To Register Online Physics Tuitions on Vedantu.com to clear your doubts from our expert teachers and solve the problems easily to score more marks in your CBSE Board exams. The electric E and magnetic M fields are perpendicular to each other and to the propagation vector k, as shown below. /Filter /FlateDecode 43 0 obj 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. This would help in proper revision and a quick glance whenever required. >> endobj 42 0 obj So, the wavefront can be represented as a straight line having a slope tan⁡θ=−3.\tan \theta =-\sqrt{3}.tanθ=−3​. Refractive index 5. >> 31 0 obj Also Read: Young’s Double Slit Experiment. endobj 3 clickers have quiz data logged, but no registration: •! stream endobj In wave optics, the approximation is carried out by using ray optics for the estimation of the field on a surface. 1 0 obj <> Polarization as Huygens assumed light waves to be mechanical disturbances which are longitudinal in nature. <> According to Huygens’s theory, light consists of waves that travel through a very dilute and highly elastic material medium present everywhere in space”. <> <> Coherent Source: Two sources that emit a monochromatic light continuously with a zero (or) constant phase difference between them are called coherent sources. Thus, a wave normal is the same as a ray of light. 11 0 obj /Matrix [1.5336 0 0 4.0640 0 0] 16 0 obj How do you differentiate between constructive and destructive interference? If a plane wavefront falls on a converging (or) diverging lens, the emergent light will have a spherical wavefront. Amplitude of light waves, A∝1rA\propto \frac{1}{r}A∝r1​, and, Intensity of light waves, I∝1r2I\propto \frac{1}{{{r}^{2}}}I∝r21​. endobj >> /Subtype /Form The nature of linear wave equation guarantees that waves can be superimposed: we may combine an array of waves by algebra, as far as each of them are proper solution of the wave equation. To Register Online Physics Tuitions on Vedantu.com to clear your doubts from our expert teachers and solve the problems easily to score more marks in your CBSE Class 11 Physics Exam. The wave optics class notes pdf is the compilation of detailed theory part, solved examples, HC Verma questions and Previous year Questions. To Register Online Physics Tuitions on Vedantu.com to clear your doubts from our expert teachers and solve the problems easily to score more marks in your CBSE Class 11 Physics Exam. endobj <> x�mλ 1�>�w�2i���&9��Ӊ�(Z���&(ȡ,3���ͻ�N �Mɠݼc�~s)�"��=�#���{JX�]��%����vi�h̨�.4N���?��[�� Α���%\��B�H*�lMd4��R/o+� Huygens Principle:-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. What is the meaning of diffraction in wave optics? All points on a wavefront act as sources of new waves, and the envelope of these sec-ondary waves constitutes the new wavefront. /Matrix [0.7257 0 0 2.1389 0 0] Transparent medium: - It is a medium through which light can be propagated easily. The resultant wave will have a low amplitude. 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