Title: PHYSICS – III (Code-09050306)
B.Sc. (Hons), Semester-III
|1||Interference: Interference by Division of Wave front: Fresnel’s Biprism and its applications to determination of wave length of sodium light and thickness of a mica sheet, Lioyd’s mirror, phase change on reflection. Interference by Division of Amplitude :Colour of thin, films, wedge shaped film, Newton’s rings. Interferometers: Michelson’s interferometer and its application to (I) Standardisation of a meter (II)
determination of wave length.
|2||Diffraction: Fresnel’s Diffraction : Fresnel’s half period zones, zone plate, diffraction at a straight edge, rectangular slit and circular apperture. Fraunhoffer diffraction : One slit diffraction, Two slit diffraction, N-slit diffraction, Plane transmission grating spectrum, Dispersive power of a grating , Limit of resolution, Rayleigh’s criterion, resolving power of telescope and a grating.||Must know||12|
|3||Polarisation: Polarisation and Double Refraction : Polarisation by reflection, Polarisation by scattering, Malus law, Phenomenon of double refraction, Huytgen’s wave theory of double refraction (Normal and oblique incidence), Analysis of Palorised light : Nicol prism, Quarter wave plate and half wave plate,
production and detection of (i) Plane polarized light (ii) Circularly polarized light and (iii)Elliptically polarized light, Optical activity, Fresnel’s theory of rotation, Specific rotation, Polarimeters (half shade and Biquartz).
|4||Nuclear Physics: Nuclear mass and binding energy, systematics nuclear binding energy, nuclear stability, Nuclear size, spin, parity, statistics magnetic dipole moment, quadrupole moment (shape concept). Interaction of heavy charged particles (Alpha particles), alpha disintegration and its theory.
Energy loss of heavy charged particle (idea of Bethe formula, no derivation), Energetics of alpha -decay, Range and straggling of alpha particles. Geiger-Nuttal law. Introduction of light charged particle (Beta-particle), Origin of continuous beta-spectrum (neutrino hypothesis) types of beta decay and energetics of beta decay, Energy loss of betaparticles (ionization), Range of electrons, absorption of beta-particles. Interaction of Gamma Ray, Nature of gamma rays, Energetics of gamma rays, passage of Gamma radiations through matter (photoelectric, compton and pair production effect) electron Positron anhilation. Asborption of Gamma rays (Mass attenuation coefficient) and its application.
|Nice to know||14|
- Optics by Ajay Ghatak, Tata McGraw Hill 1977.
- Introduction of Optics by Frank L. Pedrotti and Leno S. Pedrotti, Prentice Hall 1987.
- Nuclear Physics by D.C. Tayal, Umesh Prakashan, 125, Goblind Dev Khurja (UP).