The book “Solid State Physics” is written for B.Sc. Physics (Hons.) students according to the latest CBCS syllabus. The help of diagrams and examples is taken to clear the basic concepts of Physics. Formulas are derived step by step for easy understanding. Questions for examination and multiple choice questions for quick revision are given at the end of each chapter. The book has been divided into eight chapters namely crystal structure and reciprocal lattice, crystal diffraction, elementary theory of lattice dynamics, magnetic properties of solids, dielectrics properties of materials, properties ferroelectric of materials, elementary band theory of solids and superconductivity