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Meghalaya Public Service Commission Syllabus for Mains 2021

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The Meghalaya Public Service Commission is the State Public Service Commission is provided under Article 315 read with Article 316 of the Constitution of India. Here is a Detailed Syllabus for MCS & MPS Main Exam Optional Paper - Physics.

MCS & MPS Mains Syllabus

Optional Paper - Physics

Paper‐I

Section‐A

  1. Classical Mechanics

(a) Particle dynamics

Centre of mass and laboratory coordinates, conservation of linear and angular momentum. The rock equation. Rutherford scattering, Galilean transformation, inertial and non‐inertial frames, rotator frames, centrifugal and Coriolis forces, Foucault pendulum.

(b) System of particles

Constraints, degrees of freedom, generalised coordinates and momenta. Lagrange’s equation and applications to linear harmonic oscillator, simple pendulum and central force problems. Cycle coordinates, Hamilitonian Lagrange’s equation from Hamilton’s principle.

(c) Rigid body dynamics

Eulerian angles, inertia tensor, principal moments of inertia. Euler’s equation of motion of a rigid body force‐free motion of a rigid body. Gyrosecope.

  1. Special Relativity, Waves & Geometrical Optics

(a) Special Relativity

Michelson‐Morley experiment and its implications. Lorentz transformations‐length contraction, time dilation, addition of velocities, aberration and Doppler effect, mass‐energy relation, simple application to a decay process. Minkowski diagram, four dimensional momentum vector. Covariance of equations on physics.

(b) Waves

Simple harmonic motion, damped oscillation, forced oscillation and resonance. Beats. Stationary wave in a string. Pulses and wave packets. Phase and group velocities. Reflection and Refraction from Huygen’s principle.

(c) Geometrical Optics

Laws of reflection and refraction from Fermat’s principle. Matrix method in paraxial optic‐thin length formula, nodal planes, system of two thin lenses, chromatic and spherical aberrations.

  1. Physical Optics

(a) Interference

Interference of light‐Young’s experiment, Newton’s rings, interference by thin films, Michelson interferometer. Multiple beam interference and Fabry‐Perot interferometer. Holography and simple applications.

(b) Diffraction.

Fraunhofer diffraction‐single slit, double slit, diffraction grating, resolving power. Fresnel diffraction :‐  half‐period zones and zones plates. Fresnel integrals. Application of Cornu’s spiral to the analysis of diffraction at a straight edge and by a long narrow slit. Diffraction by a circular aperture and the Airy pattern.

(c) Polarisation and Modern Optics

Production and detection of linearly and circularly polarised light. Double refraction, quarter wave plate.

Optical activity. Principles of fibre optics attenuation; pulse dispersion in step index and parabolic index fibres; material dispersion, single mode fibres. Lasers‐Einstein A and B coefficient. Ruby and He‐Ne lasers.

Characteristics of laser light‐spatial and temporal coherence. Focussing of laser beams. Three‐level scheme for laser operation.

Section‐B

  1. Electricity and Magnetism

(a) Electrostatics and Magnetostatics

Laplace and Poisson equations in electrostatics and their applications. Energy of a system of charges, multiple expansion of scalar potential. Method of images and its applications. Potential and field due to a dipole, force and torque on a dipole in an external field. Dielectrics, polarisation. Solutions to boundary‐ value problems‐conducting and dielectric spheres in a uniform electric field. Magnetic shell, uniformly magnetised sphere. Ferromagnetic materials, hysteresis, energy loss. 

(b) Current Electricity

Kirchhoff’s laws and their applications. Biot‐Savart law, Ampere’s law, Faraday’s law, Lenz’ law, Self and mutual‐inductances. Mean and rms values in AC circuits. LR    CR and LCR circuits‐series and parallel resonance. Quality factor. Principal of transformer.

  1. Electromagnetic Theory & Black Body Radiation

(a) Electromagnetic Theory

Displacement current and Maxwell’s equations. Wave equations in vacuum, Poynting theorem. Vector and scalar potentials. Gauge invariance, Lorentz and Coulomb gauges. Electromagnetic field tensor, covariance of Maxwell’s equations. Wave equations in isotropic dielectrics, reflection and refraction at the boundary of two dielectrics. Fresnel’s relations. Normal and anomalous dispersion. Rayleigh scattering.

 (b) Black Body Radiation.

Black Body Radiation and Planck radiation law‐ Stefan‐Boltzmann law, Wien displacement law and

Rayleigh‐Jeans law. Planck mass, Planck length, Planck time, Planck temperature and Planck energy.

  1. Thermal and Statistical Physics.

(a) Thermodynamics

Laws of thermodynamics, reversible and irreversible processes, entropy, Isothermal, adiabatic, isobaric, isochoric processes and entropy change. Otto and Diesel engines, Gibbs’ phase rule and chemical potential. Van der Waals equation of state of a real gas, critical constants. Maxwell‐Boltzmann distribution of molecular velocities, transport phenomena, equipartition and virial theorems. Dulong‐

Petit, Einstein and Debye’s theories of specific heat of solids. Maxwell relations and applications. Clausius‐  Clapeyron equation. Adiabatic demagnetisation, Joule‐Kelvin effect and liquefaction of gases.

(b) Statistical Physics

Saha ionization formula. Bose‐Einstein condensation. Thermodynamic behaviour of an ideal Fermi gas, Chandrasekhar limit, elementary ideas about neutron stars and pulsars. Brownian motion as a random walk, diffusion process. Concept of negative temperatures.

Paper‐II

Section‐A

  1. Quantum Mechanics I

Wave‐particle duality. Schroedinger equation and expectation values. Uncertainty principle. Solutions of the one‐dimensional Schroedinger equation free particle (Gaussian wave‐packet), particle in a box, particle in finite well, linear harmonic oscillator. Reflection and transmission by a potential step and by a rectangular barrier. Use of WKB formula for the life‐time calculation in the alpha‐decay problem.

  1. Quantum Mechanics II & Atomic Physics

(a) Quantum Mechanics II

Particle in a three dimensional box, density of states, free electron theory of metals. The angular momentum problem. The hydrogen atom. The spin half problem and properties of Pauli spin matrices.

(b) Atomic Physics

Stern‐Gerlack experiment, electron spin, fine structure of hydrogen atom. L‐S coupling, J‐J coupling.

Spectroscopic notation of atomic states. Zeeman effect. Frank‐Condon principle and applications.

  1. Molecular Physics

Elementary theory of rotational, vibratonal and electronic spectra of diatomic molecules. Raman effect and molecular structure. Laser Raman spectroscopy Importance of neutral hydrogen atom, molecular hydrogen and molecular hydrogen ion in astronomy Fluorescence and Phosphorescence. Elementary theory and applications of NMR. Elementary ideas about Lamb shift and its significance.

Section‐B

  1. Nuclear Physics

Basic nuclear properties‐size, binding energy, angular momentum, parity, magnetic moment. Semi‐ empirical mass formula and applications. Mass parabolas. Ground state of a deuteron magnetic moment and non‐central forces. Meson theory of nuclear forces. Salient features of nuclear forces. Shell model of the nucleus‐success and limitations. Violation of parity in beta decay. Gamma decay and internal conversion. Elementary ideas about Mossbauer spectroscopy. Q‐value of nuclear reactions. Nuclear fission and fusion, energy production in stars. Nuclear reactors.

  1. Particle Physics & Solid State Physics

(a) Particle Physics

Classification of elementary particles and their interactions. Conservation laws. Quark structure of hadrons. Field quanta of electroweak and strong interactions. Elementary ideas about Unification of

Forces. Physics of Neutrinos.

(b) Solid State Physics

Cubic crystal structure. Band theory of solids‐conductors, insulators and semiconductors. Elements of superconductivity, Meissner effect, Josephson junctions and applications. Elementary ideas about high temperature superconductivity.

  1. Electronics

Intrinsic and extrinsic semiconductors‐p‐n‐p and n‐p‐n transistors. Amplifiers and oscillators. Op‐amps. FET, JFET and MOSFET. Digital electronics‐Boolean identities, De Morgan’s Laws, Logic gates and truth tables. Simple logic circuits. Thermistors, solar cells. Fundamentals of microprocessors and digital computers.  

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