Indicate Which of the Following Photons Can Cause Emission of Photoelectrons

question 29

Multiple Choice

Indicate which of the following photons can cause emission of photoelectrons from a surface of gallium (= 6.7 *10^-19 J) .

• A) 350 nm
• B) 400 nm
• C) 200 nm
• D) 650 nm
• E) 500 nm

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