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# Note for ENGINEERING PHYSICS - EP By vtu rangers

• ENGINEERING PHYSICS - EP
• Note
• Visvesvaraya Technological University Regional Center - VTU
• 16 Topics
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Engineering physics 15PHY12 Engineering Physics IA Marks : 20 Number of Lecture :04 Hours/Week Exam Marks :80 Total Number of :50 Lecture Hours Exam Hours :03 Subject Code :15PHY12/15PHY22 CREDITS - 04 COURSE OBJECTIVES: The Objective of this course is to make students learn and understand basic concepts and principles of physics to analyze practical engineering problems and apply its solutions effectively and meaningfully. To understand building up of models, design issues, practical oriented skills and problem solving challenges are the great task of the course. To know about shock waves and practical applications is the prime motto to introduce new technology at the initial stage of Engineering. Module – 1 Modern Physics and Quantum Mechanics : Black body radiation spectrum, Assumptions of quantum theory of radiation,Plank’s law, Weins law and Rayleigh Jeans law, for shorter and longerwavelength limits.Wave Particle dualism, deBroglie hypothesis.Compton Effectand its Physical significance. Matter waves and their Characteristic properties,Phase velocity and group velocity. Relation between phase velocity and groupvelocity, Relation between group velocity and particle velocity. Heisenberg’s uncertainty principle and its application, (Non-existence of electron in nucleus).Wave function, Properties and physical significance of wave function, Probability density and Normalization of wave function.Setting up of one dimensional time independent Schrodinger wave equation. Eigen values and Eigen functions. Application of Schrodinger wave equation. Energy Eigen values and Eigen functions for a particle in a potential well of infinite depth and for free particle. 10 Hours Department of physics SJBIT. Page 1

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Engineering physics 15PHY12 Module – 2 Electrical Properties of Materials: Free–electron concept (Drift velocity, Thermal velocity, Mean collision time,Mean free path, relaxation time). Failure of classical free electron theory.Quantum free electron theory, Assumptions, Fermi factor, density of states(qualitative only), Fermi–Dirac Statistics. Expression for electricalconductivity based on quantum free electron theory, Merits of quantum freeelectron theory. Conductivity of Semi conducting materials, Concentration of electrons andholes in intrinsic semiconductors, law of mass action. Temperature dependence of resistivity in metals and superconductingmaterials. Effect of magnetic field (Meissner effect).Type-I and Type-IIsuperconductors–Temperature dependence of critical field.BCS theory(qualitative).High temperature superconductors.Applications ofsuperconductors – .Maglev vehicles. 10 Hours Module – 3 Lasers and Optical Fibers : Einstein’s coefficients (expression for energy density).Requisites of a Lasersystem.Condition for laser action.Principle, Construction and working ofCO2 laser and semiconductor Laser. Applications of Laser – Laser welding,cutting and drilling. Measurement of atmospheric pollutants.Holography–Principle of Recording and reconstruction of images,. Propagation mechanis in optical fibers. Angle of acceptance.Numericalaperture. Types of optical fibers and modes of propagation. Attenuation, Block diagram discussion of point to point communication, applications. 10 Hours Module – 4 Crystal Structure : Space lattice, Bravais lattice–Unit cell, primitive cell.Lattice parameters.Crystal systems.Direction and planes in a crystal.Miller indices. Expressionfor inter – planar spacing. Co-ordination number. Atomic packing factors(SC,FCC, BCC). Bragg’s law, Determination of crystal structure using Bragg’sX–ray difractometer. Polymarphism and Allotropy. Crystal Structure of Diamond, qualitative discussion of Pervoskites. 10 Hours Department of physics SJBIT. Page 2

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Engineering physics 15PHY12 Module – 5 Shock waves and Science of Nano Materials: Definition of Mach number, distinctions between- acoustic, ultrasonic, subsonic and supersonic waves.Description of a shock wave and its applications. Basics of conservation of mass, momentum and energy -derivation of normal shock relationships using simple basic conservationequations (Rankine-Hugonit equations). Methods of creating shock wavesin the laboratory using a shock tube, description of hand operated Reddyshock tube and its characteristics. Introduction to Nano Science, Density of states in 1D, 2D and 3D structures. Synthesis : Top–down and Bottom–up approach, Ball Milling and Sol–Gelmethods.CNT – Properties, synthesis: Arc discharge, Pyrolysis methods, Applications.Scanning Electron microscope: Principle, working and applications. 10 Hours Text Books 1. Wiley precise Text, “Engineering Physics”, Wiley India Private Ltd., New Delhi. Book series – 2014, 2. Dr.M.N. Avadhanulu, Dr.P.G.Kshirsagar, “Text Book of Engineering Physics”, S Chand Publishing, New Delhi – 2012.Reference Books Reference Books : 1. Wiley precise Text, “Engineering Physics”, Wiley India Private Ltd., New Delhi. Book series – 2014, 2. S.O.Pillai, “Solid State Physics”, New Age International. Sixth Edition 3. ChintooS.Kumar ,K.Takayana and K.P.J.Reddy,“Shock waves made simple”, Willey India Pvt. Ltd. New Delhi,2014 4. A. Marikani, “Engineering Physics”, PHI Learning Private Limited, Delhi–2013 5. Prof. S. P. Basavaraju, “Engineering Physics”, Subhas Stores, Bangalore–2 6. V. Rajendran, “Engineering Physics”, Tata Mc.Graw Hill Company Ltd., New Delhi - 2012 7. S.ManiNaidu,“Engineering Physics”, Pearson India Limited – 2014. Department of physics SJBIT. Page 3

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Engineering physics 15PHY12 Module 1 2 3 4 5 Index Modern Physics and Quantum Mechanics Electrical Properties of Materials Lasers and Optical Fibers Crystal structure Page no 6 37 76 108 Mhaocgknw etaivcesParnodpSecrietnieces ooffNm S anaote Mraitaelrsials 133 Module-1 Department of physics SJBIT. Page 4