APFIVE Work Function and Photoelectron Speed
Two metals with different work functions are illuminated with the same ultraviolet light. Metal X has electrons ejected with a maximum speed twice that of electrons from Metal Y. If the work function of Metal Y is 3.0 eV, what is the work function of Metal X?
A
6.0 eV
B
3.0 eV/4
C
1.5 eV
D
Cannot determine the work function of Metal X without knowing the photon energy E
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