This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: Review Sheet for Hour-Test III -- PHYS 212, 2007 NOTE: This review sheet is NOT a substitute for doing the assigned problems, hand-in problems, reading quizzes and drills. You CANNOT expect to do well on the test unless you successfully complete all of the problems. Also, don't forget to review the qualitative points discussed in lecture. DISCLAIMER: This review sheet does not cover all of the topics that you are responsible for; i.e., there may be questions on the test dealing with subjects not covered on this sheet. Similarly, not everything on this sheet will be covered on the test. I don't even guarantee that the formulas are even correct on this sheet (i.e., check them against your lecture notes). Short-answer questions : don't forget that there will be questions that ask about qualitative or practical issues, emphasizing the kind of stuff discussed in lecture. This sheet does not cover these issues: you need to review your lecture notes to be ready for these questions. And make sure you write you answers clearly. Photons : Needless to say, be able to determine the energy of a photon, given the frequency of the light: E ph = hf and vice-versa. This comes up over and over and over again throughout all of quantum mechanics. Also, keep the relation f = c handy, just in case you need or are given the wavelength instead. In this case, of course, E ph = hc/ . Warning: dont use these formulas for any particle except for a photon. Know how the energy and the number of photons per second depend on the frequency and intensity of the electro-magnetic wave, and be able to explain and work with the photoelectric effect not only as it applies to electrons on metals but also in terms of any molecular bonds. Key is the binding energy (the work function for a metal) this is the energy needed to break off an electron. Need photon energy E ph > to get electrons off, and any excess is available for kinetic energy: K max = E ph- . Wave-particle duality : know how to determine the wavelength of a particle from de Broglie's relation = h/p....
View Full Document
This homework help was uploaded on 04/07/2008 for the course PHYS 212 taught by Professor Ladd during the Spring '08 term at Bucknell.
- Spring '08