The book has questions and answers covering the following topics in physics: - Cathodes ans X-Rays, Current, Mains Electricity and Electronics, Density, Relative Density and Pressure, Energy and Power, Equilibrium and Centre of Gravity, Gas Laws, Kinetic Theory of Matter, Light, Linear and Circular Motion and Newton's Laws of Motion, Electromagnetic Induction, Mechanical Properties of Matter, Moments of Force, Photo-electric Effect, Quantity of Heat, Radioactivity, Waves and Sound