Question

4. The following data were obtained on electron kinetic energies ejected in studying the photoelectric effect from a potassium metal surface. Use Excel or Wolframalpha to evaluate the potassium work function and the Planck constant. Remember to first convert wavelength to ener 4.49 1.89 1.34 0.7000.311 Electron kinetic energies (x 10-19 Incident λ (nm) 3.09 | 250 | 300 350 400 450 500 WolframAlpha Example: linear fit {1.3, 2.2),12.1, 5.8),(3.7, 10.2;,(4.2, 11.8) 0 ama in %7D%7B3.7,+ 10.2%7D.47B42+1 1.8%7D Which aspect of photoelectric effect demonstrates that light can have particle-like behavior?

Answer 1

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