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SYLLABUS

UNIT-1

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-2

Quantum Mechanics: Introduction - Matter waves - de Broglie’s hypothesis - Davisson-Germer experiment

- G.P. Thomson experiment - Heisenberg’s uncertainity principle - Interpretation of wave function -

Schrodinger time independent and time dependent wave equations - Particle in a potential box.

UNIT-3

Free Electron Theory and 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-4

Semiconductor Physics: Introduction - Intrinsic semi conductors - Density of charge carriers - Electrical conductivity - Fermi level - Extrinsic semiconductors - p-type and 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-5

MAGNETISM & DIELECTRICS: Introduction - Magnetic dipole moment - Magnetization - Magnetic susceptibility and permeability - Origin of permanent magnetic moment - Bohr Magneton - Classification of magnetic materials: Dia, Para and Ferro - Domain concept of Ferromagnetism - Hysteresis - Soft and hard magnetic materials - Applications of Ferromagnetic materials. Introduction - Dielectric polarization - Dielectric polarizability, Susceptibility and Dielectric constant - Types of

polarizations: Electronic and Ionic (Quantitative), Orientational polarizations (Qualitative) - Lorentz internal

field - Claussius-Mossoti equation - Frequency dependence of polarization - Applications of dielectrics.