Celestial Mechanics - Newton’s Laws Of Gravitation, Kepler’s Laws For Circular And Non-circular Orbits, Roche Limit, Barycentre, 2-body Problem, Lagrange Points.Electromagnetic Theory & Quantum Physics - Electromagnetic Spectrum, Radiation Laws, Blackbody Radiation.Thermodynamics - Thermodynamic Equilibrium, Ideal Gas, Energy Transfer Spectroscopy and Atomic Physics- Absorption, Emission, Scattering, Spectra Of Celestial Objects, Doppler Effect, Line Formations, Continuum Spectra, Splitting And Broadening Of Spectral Lines, Polarization.Nuclear Physics - Basic Concepts Including Structure Of An Atom, Mass Defect And Binding Energy Radioactivity, Neutrinos (Q).