Question

When monochromatic light of wavelength 500 nm is shown on a certain metal, el 1. are emitted with energy of 1.20 electron volts. a) How much energy was required to remove the electron from the metal? b What-is-the-de-Broghie wavelength ot the emitied oleetrons? het Flesti Soo 2. An electron is in box of length L, and is not allowed outside the box, so y 0 exc 0sxs L. The wavefunction for the electron is found to be Ψ(x)-Asin(kx). a) Use boundary conditions to show that k = nTUL b) Use the Schrödinger equation to show that E nh/(8ml2) c) Derive the value for A. d) If the box has length 1.00 nm, what would be the wavelength of light emitted w electron drops from the n-3 level to the n-2 level? What is the degeneracy in the n-3 shell of a hydrogen atom? Justify. 3. Denen erocy resers to the. atave v of ditfexevst pscl Ew ossilmdeusơf forticles, so the overall cxomy rewcasNe tke saine. For n-3 when n=3 r ante Values For n3

Answer 1

The ener nci.de 67 inidend light here ne r re neれ » plant s corutand 19 . 4313 ev o e ave 2 WYi Her 9ろ f9uat : on wave leacher 's Sina ._ .

am E p boundary Condiion poss ble o s ere h 1, 2,3 - - on comporinq i are Chro er uoe have ahih Teucher's Signature:

ven 3 m Li 62.6x1-34 5h -외 Teacher's Signature