Engineering Physics

Unit I

Quantum Mechanics: Inadequacy of classical mechanics, Planck's theory of black body radiation (qualitative), Compton effect, de-Broglie concept of matter waves, Davisson and Germer experiment, Phase velocity and group velocity, Time-dependent and time-independent Schrodinger wave equations, Physical interpretation of wave function, Particle in a one-dimensional box.

Unit II

Electromagnetic Field Theory: Stoke's theorem and Divergence theorem, Basic laws of electricity and magnetism, Continuity equation for current density, Displacement current, Maxwell equations in integral and differential form, Maxwell equations in vacuum and in conducting medium, Poynting vector and Poynting theorem, Plane electromagnetic waves in vacuum and their transverse nature, Relation between electric and magnetic fields of an EM wave, Plane EM waves in conducting medium, Skin depth.

Unit III

Wave Optics: Coherent sources, Interference in uniform and wedge-shaped thin films, Necessity of extended sources, Newton's Rings and its applications. Diffraction: Fraunhofer diffraction at single slit and double slit, Absent spectra, Diffraction grating, Spectra with grating, Dispersive power, Resolving power, Rayleigh's criterion of resolution, Resolving power of grating.

Unit IV

Fiber Optics & Laser: Fibre Optics — Principle and construction of optical fiber, Acceptance angle, Numerical aperture, Acceptance cone, Step index and graded index fibers, Fiber optic communication principle, Attenuation, Dispersion, Applications. Laser — Absorption, spontaneous and stimulated emission of radiation, Population inversion, Einstein's coefficients, Principles of laser action, Ruby laser and He-Ne laser, Laser applications.

Unit V

Superconductors and Nano-Materials: Temperature dependence of resistivity in superconducting materials, Meissner effect, Temperature dependence of critical field, Persistent current, Type I and Type II superconductors, High temperature superconductors, Properties and applications. Nano-Materials: Introduction and properties, Quantum Dots, Quantum wires and Quantum well, Fabrication — Top-Down approach (CVD) and Bottom-Up approach (Sol-Gel), Properties and applications of nano materials.