This book explains basic concepts of Physics in simple language. It covers Motion, Force, Gravitation, Work, Energy, Sound, Light, and Structure of Atom. It includes Isaac Newton’s Laws of Motion and Gravitation, equations of motion, and formulas like F = ma, KE = ½mv², and W = mg. Students learn about reflection of light, sound waves, pressure, and floatation. Atomic models by J. J. Thomson and Ernest Rutherford are also explained. The book provides definitions, formulas, examples, and numericals for quick revision and better exam preparation.