Chapter 2 Mechanical Properties of Fluids Notes. It is also called as the wave normal because the ray of light is normal to the wave front. There is transference of energy to the nearest particle as disturbance occurs, which depends on the nature of the medium. download pdf ebook or read online. ( [/ ` P 7_ The occurrence of interfering following the principle of superposition. By diffraction of light at the circular aperture, a converging lens doesnt form a point image of an object rather it produces a brighter disc surrounded by alternate dark and bright concentric rings known as Airy disc. Download textbooks of all boards (i.e Punjab, Sindh, KPK, Federal, Balochistan, Single National Curriculum SNC) & all classes in PDF. ${{\text{I}}_{\text{1}}}\text{,}{{\text{I}}_{\text{2}}}\text{=}$Intensities of Individual waves. /Producer ( Q t 5 . Apni Kaksha Class 12 Physics Notes PDF Download Here is the chapter-wise arrangement of the physics notes PDF by Apni Kaksha. ( [/ ` P 7_ Resultant Intensity Due to Two Identical Waves: The resultant intensity for two coherent sources is given by, $\text{I=}{{\text{I}}_{\text{1}}}\text{+}{{\text{I}}_{\text{2}}}\text{+2}{{\sqrt{{{\text{I}}_{\text{1}}}\text{I}}}_{\text{2}}}\cos \phi $, For identical source ${{\text{I}}_{\text{1}}}\text{=}{{\text{I}}_{\text{2}}}\text{=}{{\text{I}}_{\text{0}}}$, $\Rightarrow \text{I=}{{\text{I}}_{\text{0}}}\text{+}{{\text{I}}_{\text{0}}}\text{+2}\sqrt{{{\text{I}}_{\text{0}}}{{\text{I}}_{\text{0}}}}\cos \phi =\text{4}{{\text{I}}_{\text{0}}}{{\cos }^{2}}\frac{\phi }{2}$, $\left[ 1+\cos \theta =2{{\cos }^{2}}\frac{\theta }{2} \right]$, Redistribution of energy takes place in the form of maxima and minima in interference, Average Intensity: ${{\text{I}}_{\text{av}}}\text{=}\frac{{{\text{I}}_{\text{max}}}\text{+}{{\text{I}}_{\text{min}}}}{\text{2}}\text{=}{{\text{I}}_{\text{1}}}\text{+}{{\text{I}}_{\text{2}}}\text{=}{{\text{a}}_{\text{1}}}^{\text{2}}\text{+}{{\text{a}}_{\text{2}}}^{\text{2}}$. What Does Wave Optics Mean in Revision Notes Class 12 Chapter 10? ( [/ ` P 7_ The vibrant interplay of colours originating can explain interference of light. Also download collection of CBSE books for Class, Free revision notes, brief chapter explanations, chapter summary and mind maps for all important and difficult topics of CBSE Class 12 Physics as per syllabus, Download Class 12 Physics assignments. It includes all the topics given in NCERT class 12 Physics textbook. The envelope of these wavefronts i.e., the surface tangent to all the secondary wavefront gives the new wavefront. In a homogeneous medium, the disturbance reaches all those particles of the medium in phase, which are located at the same distance from the source of light and hence at all the time, every particle must be vibrating in phase with each other. Your complaint would be honored, and the highlighted content will be removed instantly. Download revision notes for Wave Optics class 12 Notes and score high in exams. Notes of Class 12, CET/NEET Wave Motion.pdf - Study Material. Fringe shift $\text{= }\frac{\text{D}}{\text{d}}\left( \text{ }\!\!\mu\!\!\text{ -1} \right)\text{t = }\frac{\text{ }\!\!\beta\!\!\text{ }}{\text{ }\!\!\lambda\!\!\text{ }}\left( \text{ }\!\!\mu\!\!\text{ -1} \right)\text{t}$, $\Rightarrow $ Additional path difference $=\left( \mu -1 \right)t$, $\Rightarrow $If the shift is equivalent to $\text{n}$fringes, then $\text{n=}\frac{\left( \text{ }\!\!\mu\!\!\text{ -1} \right)\text{t}}{\text{ }\!\!\lambda\!\!\text{ }}$ or $\text{t=}\frac{\text{n }\!\!\lambda\!\!\text{ }}{\left( \text{ }\!\!\mu\!\!\text{ -1} \right)}$, $\Rightarrow $Fringe shift is independent of the order of fringe (i.e shift of zero order maxima = shift of ${{\text{n}}^{\text{th}}}$ order maxima). Wave Motion, and Its Applications, , Ee, , INTRODUCTION, IN, , Wave motion is Special kind of motion in which there is not any transportation of material, bodies, but only transfer of energy takes place in such motion. ( [/ ` P 7_ i.e. Arihant CBSE Physics Term 2 Class 11 for 2022 Exam (Cover Theory and /Length 9 0 R It not only commemoratesthe birth anniversary of Sardar Vallabh Bhai Patel, but also reaffirms the. The main characteristics of wave motion are described below: Medium particles do not move from one place to another. In this context, on the occasion of Tourism Day, CBSE announces the 2nd Expression Series for the academic session 2022-23 on the, As you are aware that the country comes together to celebrate Azadi ka Amrit Mahotsav to commemorate 75 years of Indias Independence, the Ministry of Information & Broadcasting, Govt. This is called Red shift Dopplers shift $\text{ }\!\!\Delta\!\!\text{ }\!\!\lambda\!\!\text{ = }\!\!\lambda\!\!\text{ }\frac{\text{v}}{\text{c}}$, If apparent wavelength > actual wavelength, spectrum of the radiation from the source of light shifts towards the violet end of spectrum. This scattered light propagates in a direction perpendicular to the direction of incidence, and it will be plane polarized (as detected by the analyzer). iii. Also, the marking scheme and answer key for each paper is available. Huygens-Fresnel Principle defines that every point is a wavelets source on a wavefront. /CA 1.0 Wave Optics in Class 12 Physics Notes explains the association between rays of light and waves. Tranverse wave motion is the wave motion in which the particles of the medium vibrate at right angles to the direction of propagation of wave. Apart from the laws in Class 12 Physics Wave Optics Revision Notes, students have to understand certain topics, the details of which are provided below. You can download these Class 12 Physics Notes PDF provided by Aman Dhattarwal for free from the links given below. These list . If the string is very long compared position as the pulse or wave passes through them. << These notes covers the complete syllabus of Electromagnetic Waves - Class 12 including competitive exams like JEE mains and advanced, NEET and others. Clearing the concepts of light and its wave optics will help in the all-round development of young learners. 9.4. In a ray diagram, thick arrows represent the rays of light. Wave Motion A wave motion is a disturbance in a medium which is handed over from one part of the medium to the next part of the medium due to repeated to and fro motion of the particles of the medium about their mean position. Wave Motion.pdf. The revision notes help you revise the whole chapter 10 in minutes. They helps to reduce head light glare of cares and improve colour contrast in old paintings. Students and teachers of Class 12 Physics can get free advanced study material, revision notes, sure shot questions and answers for Class 12 Physics prepared as per the latest syllabus and examination guidelines in your school. Download Matriculation & Intermediate (Part-I & Part-II) Updated Pairing Schemes of all subjects. During a wave motion, energy is . Phase Difference $\left( \phi \right)$: Phase difference is the difference between the phases of two waves at a point. This model explained the causes of reflection and refraction. Download the free Pdf sheet of formula booklet physics class 12 for IIT JEE & NEET For chapter-Wave Motion. $\Delta =\left( 2n-1 \right)\frac{\lambda }{2}$ ( i.e odd multiple of $\frac{\lambda }{2}$ ), Resultant amplitude at the point of observation will be maximum if ${{\text{a}}_{\text{1}}}\text{=}{{\text{a}}_{\text{2}}}\Rightarrow {{\text{A}}_{\text{min}}}\text{=0}$, ${{\text{a}}_{\text{1}}}\text{=}{{\text{a}}_{\text{2}}}\text{=}{{\text{a}}_{\text{0}}}\Rightarrow {{\text{A}}_{\text{max}}}\text{=2}{{\text{a}}_{\text{0}}}$, Resultant amplitude at the point of observation will be minimum ${{\text{A}}_{\text{min}}}\text{=}{{\text{a}}_{\text{1}}}\text{-}{{\text{a}}_{\text{2}}}$, $\text{If }{{\text{a}}_{\text{1}}}\text{=}{{\text{a}}_{\text{2}}}\Rightarrow {{\text{A}}_{\text{min}}}\text{=0}$, Resultant intensity at the point of observation will be maximum, ${{\text{I}}_{\text{max}}}\text{=}{{\text{I}}_{\text{1}}}\text{+}{{\text{I}}_{\text{2}}}\text{+2}\sqrt{{{\text{I}}_{\text{1}}}{{\text{I}}_{\text{2}}}}$ ${{\text{I}}_{\text{max}}}\text{=}{{\left( \sqrt{{{\text{I}}_{\text{1}}}}\text{+}\sqrt{{{\text{I}}_{\text{2}}}} \right)}^{\text{2}}}$, $ \text{If }{{\text{I}}_{\text{1}}}\text{=}{{\text{I}}_{\text{2}}}\text{=}{{\text{I}}_{\text{0}}}\Rightarrow {{\text{I}}_{\text{max}}}\text{=2}{{\text{I}}_{\text{0}}}$, Resultant intensity at the point of observation will be minimum, ${{\text{I}}_{\text{min}}}\text{=}{{\text{I}}_{\text{1}}}\text{+}{{\text{I}}_{\text{2}}}\text{-2}\sqrt{{{\text{I}}_{\text{1}}}{{\text{I}}_{\text{2}}}}$, ${{\text{I}}_{\text{min}}}\text{=}{{\left( \sqrt{{{\text{I}}_{\text{1}}}}\text{-}\sqrt{{{\text{I}}_{\text{2}}}} \right)}^{\text{2}}}$, $\text{If }{{\text{I}}_{\text{1}}}\text{=}{{\text{I}}_{\text{2}}}\text{=}{{\text{I}}_{\text{0}}}\Rightarrow {{\text{I}}_{\text{min}}}=0 $. Download latest curriculum with important topics, chapter weightage, topic wise marks, Download latest 2021 Sample Papers for Class 12 Physics as per CBSE NCERT pattern and syllabus. Almost all wave types can experience this phenomenon. Diffraction and Optical Instruments: Objective lens of instrument like telescope or microscope etc. A student desiring to gain quality answers for CBSE exams can check the official website of Vedantu. ( [/ ` P 7_ The oscillations are normal to the direction of wave motion along the string, so this is an example of transverse wave. It will make academic life easier for students. So, uniform illumination occurs for a very large width. in water ${{\lambda }_{w}}=\frac{{{\lambda }_{a}}}{{{\mu }_{w}}}\Rightarrow {{\beta }_{w}}=\frac{{{\beta }_{a}}}{{{\mu }_{w}}}=\frac{3}{4}{{\beta }_{a}}$. In absorption, the charge gains energy at the expense of the electromagnetic wave. (i) A Polaroid only allows light oscillations which are parallel to the transmission axis to pass through them. The best platform for students and teachers to store books / notes online for easy sharing. '\!\!\text{ =v}\left( \text{1+}\frac{\text{v}}{\text{c}} \right)$ and, $\text{ }\!\!\lambda\!\!\text{ }\!\! Standard 12 students should download Intensity of all minimum may be zero. As the wavelength of light is very small, the deviation will be also very small and light can be assumed as travelling in a straight line. A wave in Class 12 Physics is going to explain the relationship between the rays of light with waves. The displacement y of the particles of the medium at time t in wavemotion at a distance x from the origin for a plane progressive wave travelling in the positive x direction is given by : y = a sin2/(vt x). The data has been posted by general public as well. In 1678 a Dutch physicist introduced the concept of the wave theory of light. Sample Paper all are made available throughthe best app for CBSE studentsand myCBSEguide website. The speed of a wave depends upon the nature of the medium through which it travels. If this film is placed in the path of upper wave, the pattern shifts upward and if the film is placed in the path of lower wave, the pattern will shift downward. Share. (i) Every fringes will have equal width. 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 phenomenon of restricting the oscillations of a wave to just one direction in the transverse plane is called polarisation of waves. (i) Light waves are electromagnetic waves which do not require a material medium for their propagation. The diffraction phenomenon of light is divided into two types, In Fresnels diffraction, either source or screen or both are at finite distance. Free Sample Papers with solutions for Class 12 Physics,, Download past year Question Papers for Class 12 Physics as per CBSE NCERT KVS syllabus with solutions in pdf free, Download Printable Worksheets, test papers for Class 12 Physics with questions answers for all topics and chapters as per CBSE, NCERT, KVS sylabus, Free CBSE Class 12 Physics Online Mock Test with important multiple choice questions as per CBSE syllabus, Click here to download NCERT Solutions for questions of Class 12 Physics NCERT Book. ( [/ ` P 7_ Phase is defined as the argument of sine or cosine in the expression for displacement of a wave. C e" Resolving power (R.P)$=\frac{1}{\text{Limit of Revolution}}$, R.P. It is based on the principle of selective absorption. Related Questions on Wave Optics Class 12 Notes CBSE Physics Chapter 10 [Free PDF Download] Question 1 In an interference pattern the ( n + 4) t h blue bright fringe and n t h red bright fringe are formed at the spot. The path along which light travels is known as a ray of light. They in turn produce similar . Physics ka notes free me, Download Karo. Alternate bright and dark bands obtained on the screen in this experiment. Diffraction pattern is the result of interference of waves from these sources. $\lambda =$ Wavelength of monochromatic light emitted from source. (iii) The velocity of electromagnetic wave in vacuum is c = 1 / o o (iv) The velocity of electromagnetic waves in medium is less than that of light, v < c Depending upon the shape of the source of light, wave front can be the following types: A point source of light produces a spherical wave front. Newton assumed that the changes produced due to propagation of sound in gases are isothermal which implied that a compressed layer of air at higher temperature loses heat immediately to the surroundings and a rarefied layer of air at lower temperature gains heat from the surroundings immediately so that temperature of air remains constant. Read and download free pdf of CBSE Class 12 Physics Wave Motion Exam Notes. CET/NEET . /Type /ExtGState Also $\text{ }\!\!\Delta\!\!\text{ =}\frac{\text{ }\!\!\lambda\!\!\text{ }}{\text{2 }\!\!\pi\!\!\text{ }}\text{ }\!\!\times\!\!\text{ }\phi $. MIND MAP 2 Download. ( [/ ` P 7_ Chapter 7 Wave Optics Notes. if ${{\text{y}}_{\text{1}}}\text{=}{{\text{a}}_{\text{1}}}\text{sin }\!\!\omega\!\!\text{ t}$ and ${{\text{y}}_{\text{2}}}\text{=}{{\text{a}}_{\text{2}}}\text{sin}\left( \text{ }\!\!\omega\!\!\text{ t+}\phi \right)$ so phase difference $=\phi $. these notes are very helpful for students of class 11 th and 12 th as well as the students who ae preparing foe iit-jee and neet . Therefore, Ray optics can be considered as a limiting case of wave optics. 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