Which of the Following Metals Would Be an Appropriate Choice $\varPhi$

question 123

Multiple Choice

Which of the following metals would be an appropriate choice for the construction of a photon detector for 550 nm light?

• A)sodium (\(\varPhi\) = 2.9 *10^-19 J)
• B)rubidium (\(\varPhi\) = 3.5 *10^-19 J)
• C)barium (\(\varPhi\) = 4.3 *10^-19 J)
• D)gold (\(\varPhi\) = 8.2 *10^-19 J)
• E)platinum (\(\varPhi\) = 9.1 *10^-19 J)

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