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
All Exams Old Question Papers www.questionpapersdownload.com