X-Rays: Continuous X-ray spectra. Duanne and Hunt limit. Characteristic X ray spectra, Moseley’s law and its significance, X-ray energy levels.
Bragg’s law and Bragg spectrometer. A brief mention of different types of crystals. Structures of NaCl and KCl crystals.
Compton Effect – Expression for Compton Shift.
The Electron: Determination of e/m of an electron by Thomson method, Determination of charge of an electron by Millikan’s oil drop method.
Atomic Spectra: Inadequacy of Bohr atomic model, correction due to finite mass of the nucleus, Rydberg constant in terms of reduced mass, Excitation and Ionisation potentials, Franck-Hertz experiment, Bohr-Sommerfeld Model of atom, vector model of an atom, Electron spin, space quantisation, magnetic moment of an electron due to its orbital motion. Stern-Gerlach experiment and its theory.
Spin-orbit interaction and Fine structure of spectral lines.Quantum numbers and selection rules.Pauli’s exclusion principle.Electronic configuration of atoms.Valence electron and a brief mention of L-S and J-J coupling for trio electron atoms.
Zeeman effect: Introduction, experimental study of normal Zeeman effect, theory of normal Zeeman effect, expression for Zeeman effect, quantum theory of normal Zeeman effect, anomalous Zeeman effect, Paschen-Back effect and Stark effect.
Molecular Spectra: Molecular formation, the H molecular ion, H2 – molecule. Salient features of molecular spectra.
Rotation, vibration and electronic spectra of molecules, associated quantum numbers and selection rules.Theory of pure rotation and rotation- vibration spectra, Raman and IR spectra, simple applications.
Electromagnetic Theory And Maxwell’s Equations: Displacement current, Setting up of Maxwell’s equations in SI units, Hertz experiment, Travelling electromagnetic wave, Wave equations (qualitative and quantitative) – Energy transport and Poynting vector, Poynting theorem. A radiation pressure (Normal and Oblique incidence). Concept of electric dipole, magnetic dipole, expression for energy radiated by a dipole (No derivation).