Unit I : Units and Measurements 1.1 Unit, Physical quantities : Fundamental and derived quantities and their units. 1.2 Systems of unit : CGS, MKS, FPS and SI 1.3 Dimensions, Dimensional formula. 1.4 Errors, Types of errors : Instrumental, systematic and random error, estimation of errors : absolute, relative and percentage error, significant figures. Unit II : Electricity, Magnetism and Semiconductors 2.1 Concept of charge, Coulomb’s inverse square law, Electric field, Electric field intensity, potential and potential difference. 2.2 Magnetic field and magnetic field intensity and its units, magnetic lines of force, magnetic flux. 2.3 Electric current, Ohm’s law, specific resistance, laws of series and parallel combination of resistance, heating effect of electric current. 2.4 Conductors, Insulators and Semiconductors, Energy bands, intrinsic and extrinsic semiconductors. 2.5 p-n junction diode, I-V characteristics of p-n junction, applications of p-n junction diode. Unit III : Heat and Optics 3.1 Heat, temperature, temperature scales. 3.2 Modes of transfer of heat, good and bad conductors of heat, law of thermal conductivity. 3.3 Boyle’s law, Charle’s law, Gay Lussac’s law, perfect gas equation. 3.4 Specific heat of gas at constant pressure and volume (Cp and Cv), ratio of specific heats. 3.5 Reflection, refraction, laws of refraction, total internal reflection. 3.6 Optical fiber : Principle, construction and path of light through optical fiber, applications of optical fibers.