A Stopping Potential of 3

question 20

Multiple Choice

A stopping potential of 3.2 V is needed for radiation whose wavelength is 200 nm. What is the work function (in eV) of the material?

• A) 4.0
• B) 3.0
• C) 5.0
• D) 6.0
• E) 2.0

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Usury Law

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