Electromagnetic Radiation with a Frequency of 8

question 80

Multiple Choice

Electromagnetic radiation with a frequency of 8.6 *10¹⁴ Hz incident on an unknown metal surface causes ejection of photoelectrons with kinetic energies of 1.3 *10^-19 J. What is the unknown metal?

• A) rubidium ( = 3.5 *10^-19
• B) gold ( = 8.2 *10^-19
• C) nickel ( = 8.3 *10^-19
• D) sodium ( = 4.4 *10^-19
• E) platinum ( = 9.1 *10^-19

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