Black body radiation spectrum, Assumptions of quantum theory of
radiation, Plank’s law, Weins law and Rayleigh Jeans law, for shorter and
longer wavelength limits. Wave Particle dualism, deBroglie hypothesis.
Compton Effect. Matter waves and their Characteristic properties,
Definition of Phase velocity and group velocity, Relation between phase
velocity and group velocity, Relation between gr......

Free–electron concept (Drift velocity, Thermal velocity, Mean collision
time, Mean free path, relaxation time). Failure of classical free electron
theory. Quantum free electron theory, Assumptions, Fermi factor, density
of states (qualitative only) Fermi–Dirac Statistics. Expression for electrical
conductivity based on quantum free electron theory, Merits of quantum
free electron theory.
Con......

Einstein’s coefficients (expression for energy density). Requisites of a
Laser system. Condition for laser action. Principle, Construction and
working of CO2 laser and semiconductor Laser. Applications of Laser –
Laser welding, cutting and drilling. Measurement of atmospheric
pollutants. Holography–Principle of Recording and reconstruction of
images.
Propagation mechanism in optical fibers. ......

Space lattice, Bravais lattice–Unit cell, primitive cell. Lattice parameters.
Crystal systems. Direction and planes in a crystal. Miller indices.
Expression for inter – planar spacing. Co-ordination number. Atomic
packing factors (SC,FCC,BCC). Bragg’s law, Determination of crystal
structure using Bragg’s X–ray difractometer. Polymarphism and Allotropy.
Crystal Structure of Diamond, qualitativ......

Definition of Mach number, distinctions between- acoustic, ultrasonic,
subsonic and supersonic waves. Description of a shock wave and its
applications. Basics of conservation of mass, momentum and energy.
Normal shock equations (Rankine-Hugonit equations). Method of creating
shock waves in the laboratory using a shock tube, description of hand
operated Reddy shock tube and its characteristics......