The Diagram Shows the Graphs of the Stopping Potential as a Function

question 21

Multiple Choice

The diagram shows the graphs of the stopping potential as a function of the frequency of the incident light for photoelectric experiments performed on three different materials. Rank the materials according to the values of their work functions, from least to greatest.

• A) 1, 2, 3
• B) 3, 2, 1
• C) 2, 3, 1
• D) 2, 1, 3
• E) 1, 3, 2

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