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ENGINEERING PHYSICS

by Nishant YadavNishant Yadav
Type: NoteInstitute: Visvesvaraya Technological University Regional Center Offline Downloads: 249Views: 10129Uploaded: 10 months ago

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Nishant Yadav
Nishant Yadav
$ ' LECTURE NOTES ON ENGINEERING PHYSICS Revised Edition 2014 As per latest VTU syllubus Dr. J. Balasubramanyam Formerly, Professor and Head, Department of Physics, KSIT, Bangalore-61 Presently, BASE Educational Services Private Ltd, Bangalore Prof. K. S. Mahesh Lohith Marata Mandal College of Engineering, Belgaum Sujith Thomas Formerly, Assistant Professor, Department of Physics, BNMIT, Bangalore Presently,Silicon Labs, Bangalore & %
Contents I Module 1: Modern Physics and Quantum Mechanics 3 1 Modern Physics 5 1.1 Introduction to Blackbody radiation spectrum . . . . . . . . . . . . . . . . 5 1.2 Spectrum of blackbody radiation . . . . . . . . . . . . . . . . . . . . . . . 5 1.3 Wein’s distribution law . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.4 Rayleigh-Jeans law . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.5 Planck’s Radiation Law . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.6 Reduction of Planck’s law to Wein’s law and Rayleigh-Jeans law . . . . . . 8 1.7 Photoelectric effect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 1.8 Einstein’s explanation of photoelectric effect . . . . . . . . . . . . . . . . . 9 1.9 Compton Effect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 1.10 De-Broglie’s hypothesis . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 1.11 Expression for De-Broglie wavelength (from analogy) . . . . . . . . . . . 11 1.12 Experimental verification of De-Broglie’s hypothesis (Davisson and Germer experiment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 1.13 Phase velocity and Group velocity . . . . . . . . . . . . . . . . . . . . . . 15 1.14 Expression for group velocity . . . . . . . . . . . . . . . . . . . . . . . . . 16 1.15 Relation between Group velocity and phase velocity . . . . . . . . . . . . . 17 1.16 Relation between group velocity and particle velocity . . . . . . . . . . . . 18 1.17 Expression for de-Broglie wavelength(From Group velocity) . . . . . . . . 19 1.18 Properties of Matter waves . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Multiple Choice Questions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Descriptive Questions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Exercise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Quantum Mechanics 27 2 iii

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