Interference o fLight, Diffraction of Light, Polarisation of Light, Lasers, Fibre Optics, Dielectrics, Special Theory of Relativity, Superconductivity, simple Harmonic Oscillations, Damped and Forced Harmonic Oscillators, Electromagnetic Wave Theory, Nuclear Fission and Fusion, Interaction of Radiation with Matter,mRadiation Detectors, Crystal Structure, Bonding in Solids, Origin and Fundation of Quantum theory, Schrodinger Wave Equation and Wave Functions, Nano-Science, Free Electron Theory, Band theory of Solids, Photoconductivity and Photovoltaics, Magnetic Properties of Materials.