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: Physics 2D — Spring 2010 Quiz #2: Quantum Theory of Light and Matter Friday April 16 11:00am to 11:50am [Note: This is a closedbook exam. No note is allowed. The total score of this exam is 50 points. Points assigned to each problem is a guide to how many minutes you should spend working on it.] Possibly useful formulae: • Binomial expansion: (1 + x ) n = 1 + n · x + n ( n 1) 2 x 2 + ... • Taylor expansion for exponential functions: e x = 1 + x + 1 2 x 2 + ... • wave speed for light: c = f · λ • energymomentum relation: E 2 = p 2 c 2 + m 2 c 4 • RaleighJean’s law: u ( f,T ) = 8 πf 2 c 3 · k B T • Wien’s empirical formula: u ( f,T ) = Af 3 · e Bf/T • Bohr’s quantization condition: m e · v · r = n ¯ h ; ¯ h ≡ h/ (2 π ). • energy levels of the hydrogen atom: E n =E /n 2 • radii of the allowed electron orbit for hydrogen atom: r n = a · n 2 1 1. Short answers: [10/50 points] (a) Einstein was awarded a Nobel prize for the equation E = hf . de Broglie was awarded....
View
Full
Document
This note was uploaded on 09/13/2010 for the course PHYS phys 2d taught by Professor Hirsch during the Spring '08 term at UCSD.
 Spring '08
 Hirsch
 Physics, Light

Click to edit the document details