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Online Class by Satyadhar Joshi

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1 Online Class by Satyadhar Joshi http://onlineclasses.nanotechbiz.org/

2  Introduction to the Exam  Syllabus of the exam and marks distribution  Strategy for the exam for April and Nov times  Mechanics and sample questions  Electrodynamics  Examples  Conclusion

3  Subject GRE Physics overview  Marking Scheme  Syllabus of the Exam  Talk on each topic  Focus on two major area: Mechanics and Electro dynamics  Some examples from the real exam http://en.wikipedia.org/wiki/GRE_Physics_Test

4 20% Classical Mechanics 18% Electricity & magnetism 12% Quantum mechanics 10% Thermo+stat. mech.10% Atomic physics 9% Optics and waves 9% Special topics 6% Special relativity 6% Laboratory methods Questions test mastery of material from a typical undergraduate curriculum. For the most part the exam draws from “Halliday and Resnick” level classical, E&M, Thermo, optics, and waves. Quantum and atomic physics typical of a 3rd semester modern physics course.

5  The exam is scored in a two step process  A raw score is computed as: C - 1/4 I where C is the number of correct answers and I is the number of incorrect answers. Un-answered (U) questions earn 0 points.  There are many combinations which earn the same raw score. For example: ‣ C = 52, I=8, U=40 : R= 50 ‣ C = 60, I=40, U=0: R= 50  The raw score is then converted to a scaled score. The scaling procedure is complicated and tries to account for “bad” questions and the relative difficulty of this year’s exam compared to previous years.

6  Vectors  Linear motion  2D motion  Newton’s Law  Momentum  Energy  Harmonic Motion  Lagrangion Motion

7  Electric Field  Capacitor  Current and Resistor  Circuits  Magnetic  Mag Fields

8  Heat  Temperature  Coeff of Management  Heat capacity  Conduction  Laws of Thermodynamics  Entropy

9  Rutherford Scattering  Atomic Spectra  Bohr Model  Laser

10  Mechanical Waves  Ray Optics  Thin Lenses  Interpherence  Diffraction

11  Wave Function  Schrödinger Equation  Potential Wall & Energy Level  Harmonic Oscillator  Reflection & Transmission from Barrier

12  Time dilation and length contraction  Dynamics  Lorentz Transformation

13  Each session each class

14  Some questions

15  REA GRE

16  http://www.ets.org/Media/Tests/GRE/pdf/Phy sics.pdf  http://happyquark.com/2009/02/24/physicsgr e‐practice‐exams/  http://grephysics.net/ans/


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