PHYSICS- SPECIAL THEORY OF RELATIVITY: Basics: Events, Observer, Frame of Reference, Variable Quantity, Invariable Quantity, Transformation Equation, Absolute Rest, Absolute Motion, Einstein's Special theory of Relativity; Lorentz Transformations & its Applications, Relativistic Velocity Transformation (or Velocity addition theorem); Variation of Mass with Velocity, Mass Energy Equivalence, Michelson-Morley Experiment.