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# APPLIED PHYSICS

JNTUK R19 APPLIED PHYSICS SYLLABUS & STUDY NOTES:-
UNIT-I:-
WAVE OPTICS:- Principle of Superposition - Interference of light - Conditions for sustained Interference - Interference in thin films (reflected geometry) - Newton’s Rings (reflected geometry). Diffraction - Fraunhofer Diffraction - Diffraction due to Single slit (quantitative), Double slit, N -slits and circular aperture (qualitative) – Intensity distribution curves - Diffraction Grating – Grating spectrum – missing order – resolving power – Rayleigh’s criterion – Resolving powers of Microscope, Telescope and grating (qualitative).

UNIT-II:-
QUANTUM MECHANICS:- Introduction – Matter waves – de Broglie’s hypothesis – DavissonGermer experiment – G. P. Thomson experiment – Heisenberg’s Uncertainity Principle –interpretation of wave function – Schröedinger Time Independent and Time Dependent wave equations – Particle in a potential box.

UNIT-III:-
FREE ELECTRON THEORY & BAND THEORY OF SOLIDS:- Introduction – Classical free electron theory (merits and demerits only) - Quantum Free electron theory – electrical conductivity based on quantum free electron theory – Fermi Dirac distribution function – Temperature dependence of Fermi-Dirac distribution function - expression for Fermi energy - Density of states . Bloch’s theorem (qualitative) – Kronig-Penney model(qualitative) – energy bands in crystalline solids – E Vs K diagram – classification of crystalline solids – effective mass of electron – m* Vs K diagram - concept of hole.

UNIT-IV:-
SEMICONDUCTOR PHYSICS:- Introduction – Intrinsic semi conductors - density of charge carriers - Electrical conductivity – Fermi level – extrinsic semiconductors - p-type & n-type - Density of charge carriers - Dependence of Fermi energy on carrier concentration and temperature – Hall effect- Hall coefficient - Applications of Hall effect - Drift and Diffusion currents – Einstein’s equation.

UNIT-V:-
MAGNETISM & DIELECTRICS:- Introduction – Magnetic dipole moment – Magnetization – Magnetic susceptibility and permeability – Origin of permanent magnetic moment – Bohr magneton – Classification of magnetic materials: Dia, para & Ferro – Domain concept of Ferromagnetism - Hysteresis – soft and hard magnetic materials – applications of Ferromagnetic material. Introduction - Dielectic polarization – Dielectric Polarizability, Susceptibility and Dielectric constanttypes of polarizations: Electronic and Ionic (Quantitative), Orientational polarizations (qualitative) – Lorentz Internal field – Claussius-Mossoti equation - Frequency dependence of polarization – Applications of dielectrics.

HAND WRITTEN NOTES :-

UNIT-2

UNIT-3

UNIT-4

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