The Work Function of Sodium Is $\varPhi$ = 290 *10^-19 J

question 106

Multiple Choice

The work function of sodium is $\varPhi$ = 2.90 *10^-19 J.What is the maximum wavelength that can cause the ejection of photoelectrons from a sodium surface?

• A)151 nm
• B)222 nm
• C)45.1 nm
• D)451 nm
• E)685 nm

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