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Harmonic Oscillators; Damped and Forced Harmonic Oscillators. Waves: One Dimensional and Three Dimensional waves, Interference: Interference in thin films (Reflected system) Diffraction: Fraunhofer and Fresnel Diffraction, grating, polarization of light: double refraction production and detection of polarized light, Superconductivity: Properties and applications. Quantum mechanics: Schrodinger Equation-formulation and solution, operators, applications.Statistical Mechanics: Macrostates and Microstates, Maxwell-Boltzmann, Bose-Einstein and Fermi Dirac Statistics, Fermi Level and its Significance. Acoustics: Intensity of sound Reverberation and Design concept. Ultrasonics: Production, Detection and applications, NDT Methods, laser: Properties, working principle, practical Lasers.Photonics: Basics of solid state lightning, Photo detectors, Solar Cells, Fibre Optics