Photoelectric Goods PhET Lab
Open the Photoelectric Goods PhET Simulation. **Before adjusting everything rejoinder the questions under**
1) Before you commence, what do earn supervene to …
a) the metal exterior when gentle strikes it
b) the gentle the concentration slider is moved
2) Do you reckon all intensities of gentle earn free electrons? Explain.
3) Do you reckon all wavelengths of gentle earn free electrons? Explain.
Part 1 – Intro to Photoelectric Goods
1) What can you transmute in the pretence?
2) Select a metal to consider. Develop a proceeding for determining the characteristics of the gentle indispensable to free electrons from the metal. Write your proceeding and your conclusions under.
3) Based on your selected metal rejoinder the aftercited questions
a) At what wavelengths was it foremost likely to oust electrons?
b) What wavelengths were most efficacious?
c) What does concentration transmute?
Part II – Finding a Type for the Photoelectric Effect
4) Describe the three graphs you can opinion in the pretences by supply in the table under.
Explanation (using physics stipulations)
Current vs. Battery Voltage
Current vs. Gentle Intensity
Electron Enthusiasm vs. Gentle Frequency
5) Propose a sober equation for the photoelectric goods using the stipulations we bear discussed in class (exertion exercise, luminous gentle, max E of ejected electrons). Use the pretence to identify your type and effect a graph of the ultimatum electron enthusiasm vs. the gentle quantity.
Selected metal: ___________________
gentle wavelength (nm)
gentle quantity (Hz)
electron abeyance voltage (V)
Ejected Electron KE (eV)
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