B.Tech(MDU) - [PHY-102-F PHYSICS-II]


Sessional : 50 Marks 
Exam : 100 Marks


Section A 

Crystal Structure 
Space lattice, unit cell and translation vector, Miller indices, simple crystal structure. Laue’s treatment to Bragg’s law, powder method, Point defects in solids – Schottky and Frenkel defects. Bonding in solids- Ionic and covalent bonds. 

Quantum Physics 
Difficulties with Classical physics, Introduction to quantum mechanics-simple concepts. Black Body radiations Discovery of Planck’s constant, phase velocity and group velocity. Schrodinger wave equations-time dependent and time independent, Expectation value, Ehrnfest Theorem, particle in a one-dimensional box. Quantum Statistics (Bose-Einstein and Fermi-Dirac Statistics). Elementry ideas of quark, gluons and hadrons. 



Section B 

Nano-Science 
Features of nanosystems, concept of quantum size effect, quantum dots and their applications. 
Free Electron Theory 
Elements of classical free electron theory and its limitations. Drude’s theory of conduction , quantum theory of free electrons. Fermi level, density of states. Fermi-Dirac distribution function. Thermionic emission, Richardson’s equation. 

Section C 

Band Theory Of Solids 
Origin of energy bands, Kronig-Penny model (qualitative), E-K diagrams, Brillouin Zones, concept of effective mass and holes. Classification of solids into metals, semiconductors and insulators. Fermi energy and its variation with temperature. Hall Effect and its applications. 
Photoconductivity & Photovoltaics 
Photoconductivity in insulating crystal, variation with illumination, effect of traps, application of photoconductivity, photovoltaics cells, solar cell and its characteristics. 

Section D 
Magnetic Properties Of Solids 
Atomic magnetic moments, orbital diamagnetism. Classical theory of paramagnetism, ferromagnetism, molecular fields and domain hypothesis.

Text Books : 

Concepts of Modern Physics – Arthur Beiser (TMGH) 
Solid State Physics – S.O.Pillai (New Age Int. Ltd. Pub.) 
Modern Physics for Engineers – S.P.Taneja (R. Chand) 
Engineering Physics – SatyaPrakash (Pragati Prakashan) 
Modern Engineering Physics – A.S.Vasudeva (S. Chand) 
Reference Books : 
1. Introduction to Solid State Physics – Kittel (John Wiley) 
2. Quantum Mechanics – A. Ghatak 
3. ATextbook of Engineering Physics-Avadhanulu and Kshirsagar (S.Chand)

Note: 
Examiner will set 9 questions in total, with two questions from each section and one question covering all sections which will be Q.1. This Q.1 is compulsory and of short answers type. Each question carries equal mark (20 marks). Students have to attempt 5 questions in total.

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