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M.SC PHYSICS SOLID STATE PHYSICS AND ELECTRONIC DEVISES QUESTION PAPAERS

KARNATAKA STATE OPEN UNIVERSITY I Semester M. Sc. Degree Examination PHYSICS: Solid State Physics and Electronic Devices Time: 3 Hours Max. Marks: 80 Answer all questions 1. a) State and prove Bloch theorem. b) Distinguish between first and second Brillouin zones. (10+5) OR 2. a) Using Kronig-Penny model, show that energy spectrum of solids consists of number of allowed energy bands separated by forbidden gaps. b) Discuss a method of determining Fermi surface of a metal experimentally. (10+5) 3. a) Discuss the Sommerfeld theory of free electrons b) Write a note on Umklapp scattering. (10+5) OR

M.SC PHYSICS ATOMIC AND MOLECULAR PHYSICS QUESTION PAPERS

KARNATAKA STATE OPEN UNIVERSITY I Semester M. Sc Degree Examination PHYSICS: Atomic and Molecular Physics Time: 3 Hours Max. Marks: 80 Answer all questions 1. a) Obtain an expression for the rotational energy of a diatomic molecule considering rigid rotator model. b) Briefly explain Born –Oppenheimer approximation (10+5) (OR) 2. a) With the help of energy level diagram, explain the rotational structure of electronic transition. b) Write a note on the formation of band head in rotational band spectra for ' '' B B v v  using Fortrat parabola. (10+5) 3. a) Describe the parameters of a molecular structure in detail. b) Write the differences between electrovalent bond and covalent bond. (10+5) (OR) 4. a) Based on the Valence bond theory, explain the electrical conductivity of metals and semi-metals. b) Briefly explain sp- hybridization along with its characteristics. (10+5) 5. a) Explain the processes of induced absorption, spontaneous emission and stimula

M.SC PHYSICS CLASSICAL MECHANICS QUESTION PAPERS

I Semester M. Sc Degree Examination PHYSICS: Classical Mechanics Time: 3 Hours Max. Marks: 80 Answer all questions 1. a) Prove that the sum of PE and KE remains constant for a system of particles moving under the action of a conservative force. b) Define centre of mass for a system of particles (10+5) (OR) 2. a) Starting from D’Alembert’s principle, derive an expression for Lagrange’s equations of motion. b) What are constraints? Write their classification. (10+5) 3. a) Derive Hamilton’s canonical equations of motion from variational principle. b) Obtain Hamiltonian for one dimensional simple harmonic oscillator. (10+5) (OR) 4. a) Define the term ‘canonical transformation’ and hence derive the condition for a canonical transformation. b) Define Poisson bracket and express Hamilton’s equation of motion using Poisson’s equation. (10+5) 5. a) Using Hamilton –Jacobi method solve one dimensional harmonic oscillator problem. b) State and prove parallel axis theorem. (10+

SSLC KEY ANSWER

Key Answer JUNE 2015 - RR & PR Key Answer 2015 - CCERF Key Answer 2015 - CCEPF Key Answer 2015 - RR & PR Key Answer 2014 Key Answer 2013 Key Answer 2012