arunma said:
Woah now, I only said I answered 60 questions. If I recall, I only got something like 40 of them right, resulting in the fairly average score of 620. If I actually managed to get 60 questions right, I'd consider myself a physics genius.
i'll actually be disappointed if i got more than five wrong.
Sure. For analytical mechanics, it might be a good idea to study Lagrangian mechanics. I know that sounds monsterous, but it's really pretty easy (most undergrad textbooks only spend a single chapter on the topic). I recall having about four questions that pertained to this.
the gre's questions on lagrangian mechanics are basic, basic, basic!
also, don't neglect hamilton's equations. i could've gotten one more question right this time around if i had bothered to look at'em.
For QM, make sure you know how to deal with Dirac delta potentials, finite square wells, finite potential barriers, and of course the easy case of the infinite square well. You've probably learned most of this in modern physics, so it should all be review. You might also want to pick up a senior quantum mechanics book and read the chapter that covers Dirac notation. It's not really that hard, but you don't want to be confused when you start seeing ket notation.
i don't think you have to worry about dirac delta potentials. just stuff about the harmonic oscillator, finite and infinite square wells, angular momentum, computing commutators, and, if you want to be overprepared, a question on time independent perturbation theory pops up every once in a while.
the rest of the quantum stuff is either basic probability/expectation value stuff or things you can reason out yourself. (in my experience, anyway.)
As for not having taken nuclear physics, don't worry about it. They don't ask specialized questions on topics like solid state, nuclear, plasma, or other such things. If they do, they'll be questions you can answer without having taken the class. For example, in one question on my GRE, we were asked to use the Hubble Constant to estimate the age of the universe. It turned out that if you looked at the units, you knew that you just had to invert the constant. I was actually hurt slightly by having taken cosmology, because I spent a minute remembering that in reality, you've got to add a factor of 2/3. Oh well...
they do have some questions on solid-state, nuclear, particle, and astrophysics/cosmology, but it's at the level of a modern physics class. if you read the relevant chapters in your modern physics textbook, you'll probably be overprepared.
some of the particle physics questions can get really obscure, so i didn't really bother too much with them.
i might as well give my secrets to studying, since i think i did pretty well on the test.
the exam from 2001 is on the ets website, and the exams from 1986, 92, and 96 are floating around on the internet. there used to be a book with those exams in'em, and people have put'em in the 'tubes. i took all four exams, beginning in early, early february (like, a day before the superbowl!), spaced out by two or three weeks. during that time, i would analyze the questions i got wrong and skipped (and even some i got right!), writing down concepts i never knew before (e.g., bragg reflection, polarization, etc.) and making "equation sheets" for the topics i missed the most questions in (atomic physics, EM, optics, etc.).
the guy who runs grephysics.net has solved all of the problems to all four exams. I've found that many of his solutions are really unclear and/or total crap. some users post better solutions beneath his, so look for those. i remember one solution to a problem on grephysics.net... the guy says, "this is just a simple propogation of errors problem" and then proceeded to crank out the answer. not too instructive if you don't know anything about that topic to begin with! of course, i could've researched the topic on my own, but i didn't really bother trying to understand the lab methods questions at all--i just had to hope not to see very many of'em!
also, harvard's sps website has some tex'ed up study sheets for a lot of the topics covered. i noticed that some equations were wrong (having gammas in the wrong place here and there, for example), so you really have to go through and check everything. no big deal--you'll just reinforce the material that way!
oh, and know your dipole transition selection rules! an easy way to get one or two questions right! out of the four practice exams, there was at least one problem on that, and if you knew it, it took all of five seconds to find the right answer. (i can't say whether or not i saw one on the exam i took yesterday...

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