UNIT – I DIELECTRIC AND MAGNETIC PROPERTIES: Dielectric Properties: Basic definitions, electronic,
ionic and orientation polarizations-qualitative; Internal field in solids. Magnetic Properties: Basic definitions,
origin of magnetic moment, Bohr magneton, classification of dia, para and ferro magnetic materials on the
basis of magnetic moment, domain theory of ferro magnetism on the basis of the hysteresis curve.
UNIT – II ACOUSTICS AND ULTRASONICS: Acoustics: Reverberation, reverberation time, Sabine's
formula (qualitative), absorption coefficient, measurement of absorption coefficient, factors affecting acoustics of an
auditorium and their remedies; Ultrasonics: Introduction; Generation of ultrasonic waves; Magnetostriction method,
piezoelectric method, properties, applications.
UNIT – III EQUILIBRIUM OF SYSTEM OF FORCES: Introduction, basic concepts, system of forces,
coplanar concurrent forces, force systems in space, parallel forces in plane; Force systems in space, couples,
resultant, Lami's theorem, triangle law of forces, polygon law of forces, condition of equilibrium.
UNIT – IV FRICTION: Friction: Types of friction, limiting friction, laws of friction, angle of repose, equilibrium of
body laying on rough inclined plane, Application of friction: ladder friction, wedge friction, screw friction.
UNIT – V DYNAMICS OF RIGID BODIES - MOMENT OF INERTIA: Rotational motion, torque, angular
momentum, relation between torque and angular momentum, angular momentum of system of particles, moment of
inertia, expression for moment of inertia, radius of gyration, theorems on moment of inertia, moment of inertia of thin
rod, rectangular lamina, circular disc.
