Photoelectric Effect Virtual Experiment

Photoelectric Effect Virtual Experiment - Photoelectric...

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Photoelectric Effect PhET Virtual Experiment Name: ______________________________ Period: _______ 1. http://phet.colorado.edu/sims/photoelectric/photoelectric.jnlp 2. Threshold Frequency and Work Function a. Define: i. Threshold Frequency ii. Work Function b. Explore: Under Graphs , place a check next to Electron Energy vs. Light Frequency . Use this graph to determine the threshold frequency and work function for each sample. Sample Threshold Frequency ( x 10 15 Hz) Work Function (eV) Sodium Zinc Copper Platinum Calcium ????? c. Using any one of the samples, determine the slope of the graph. Show your work below. Compare the magnitude of the slope to Planck’s constant.
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3. What role does light intensity play in the Photoelectric Effect? a. Key Concepts : i. What is another word for the “intensity” of light? ii. Electric current (covered later in our course) refers to the rate at which electrons flow. In this case, the current is increased by causing more electrons to flow. b.
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This note was uploaded on 05/31/2011 for the course CHEM 4U taught by Professor Jargin during the Spring '11 term at York University.

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Photoelectric Effect Virtual Experiment - Photoelectric...

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