exam1_F09_ans - NAME KEY Examination for BCH 463 Monday...

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1 NAME KEY Examination for BCH 463 Monday September 21, 2009 This examination is scheduled from 3:05 to 3:55 pm. For full credit show all your work. The total number of points for this test is 110. (There are 10 bonus points) Some Physical constants Planck constant: h= 6.63 x 10 -34 J s ! = 1.05 ! 10 " 34 J s Mass of electron: m e = 9.1 x 10 -31 kg Mass of proton: m p = 1. 67 x 10 -27 kg Speed of light in vacuum: c = 3 x 10 8 m/s Energy Conversion: 1eV = 1.6 x 10 -19 J Length Conversion: 1 m = 100 cm = 1000 mm = 10 6 um = 10 9 nm =10 10 Å =10 12 pm
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2 1. (30 points) Quantum theory. A to D are Multiple choices, only one answer is correct, please circle your answer. A) The observed blackbody radiation is in conflict with classical theory for 1. large wavelengths 2. small wavelengths 3. all wavelengths 4. at no wavelengths, it agrees B) For a metal with a work function of 2.7 eV, calculate the kinetic energy of the ejected electron for 230 nm light 1. 1.2 x 10 -18 eV 2. 2.7 x 10 -18 eV 3. 1.2 eV 4. 2.7 eV C) For an electron moving at a velocity of 1.55x10 8 m/s, the wavelength is 1. 4.7 x 10 -25 m 2. 4.7 x 10 -17 m 3. 4.7 x 10 -12 m 4. 4.7 x 10 -9 m D) The wavefunction obtained using the Schrodinger equation must 1 always be smooth and continuous 2 have only a single value 3. may be zero but not have an infinite value 4.
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  • Spring '14
  • ground state, wave-particle duality principle

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