Gauhati University Question Papers for Physics 4th Semester
Gauhati University Question Papers for Physics 4th Semester
Question Paper from 2010 available
More than 50 question papers every semester
Please check your syllabus before downloading the question paper.
If syllabus does not match then don't download the question paper.
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Paper 101
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Paper 102
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2010
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More than 50 question papers every semester
Syllabus down here
FOURTH SEMESTER
PAPER: 401 (THEORY)
(a) MATHEMATICAL METHODS-IV:
1. Differential Equations: Second order linear differential equations, series method of solutions
(Frobenius), Legendre’s differential equations, Legendre’s polynomial, Hermite’s differential
equations, Hermite’s polynomial, generating function, spherical harmonics, orthogonal properties
& recurrence relations.
2. Probability theory: Mutually exclusive events, theorem of total probability, compound events and theorem of compound probability. Probability distributions -Gaussian distribution, mean and standard deviation.
(b) INTRODUCTON TO COMPUTER AND COMPUTER PROGRAMMING:
1. Functional organisation of a digital computer-CPU, memory, input/output unit.
Flowcharts, Algorithms, High level Computer languages, programming in one high level
++
language (eitherFORTRAN-95 or C or C
). Data types, different types of variables,
important commands, I/O statements, relation and logical statements, transfer statements, string manipulation, subscripted variables, Functions and subroutines.
PAPER: 402 (THEORY)
(a) WAVE OPTICS:
(a) WAVE OPTICS:
1 Interference: Concept of light wave and its equation, complex representation of superposition of waves, meaning of coherence, to show that interference fringes are hyperbolic in general, condition for straight fringes, Stokes’ law, interference due to Fresnel’s biprism, interference by a plane parallel film, wedge shaped film, colour of thin film, Newton’s rings, Michelson interferometer and its application for finding difference in wavelengths.
2 Diffraction: Difference between Fresnel and Fraunhofer classes, half-period zones and strips, Zone plate and its lensing property, diffraction at a straight edge and at a circular aperature (with
2 Diffraction: Difference between Fresnel and Fraunhofer classes, half-period zones and strips, Zone plate and its lensing property, diffraction at a straight edge and at a circular aperature (with
reference to microscope), Fraunhofer diffraction due to a single slit, double slit and transmission
gratng, wavelength measurement by the plane transimission grating, resolving power of a grating, theory of concave grating.
3 Polarisation: Double refraction, optic axis and CaCO3 crystal, plane, circular and elliptically polarised light, Retarding plates and their uses for producing and analysing different polarised light, specific rotation of plane of polarisation and half-shade polarimeter.
(b) SPECIAL THEORY OF RELATIVITY:
1. Formulation of Special Theory of Relativity and Relativistic Kinematics: The need for a new model of kinematics (relativity). Electromagnetism and null result of Michelson-Morley experiment, negation of ether concept. Postulates of special theory of
relativity. Galilean transformation (Newtonian kinematics) and Lorentz transformation. Application of Lorentz transformation,. Length contraction, time dilation and their examples and application to physical situations (viz. muon decay). Relativistic transformation of velocity. Relativistic Doppler Effect and twin paradox.
2. Relativistic Momentum and Energy, Space-time: Relativistic momentum and energy.
Equivalence of mass and energy. Massless particles (i.e. photons). The geometry of space- time and space-time interval. Time-like and space-like events .Concept of four-vectors and
Minkowski space.
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