Work Function and Photoelectron Speed
Ultraviolet light of a single frequency illuminates two different metal surfaces, X and Y. The maximum speed of photoelectrons ejected from metal X is twice the maximum speed of those from metal Y. If the work function of metal Y is 3.0 eV, what is the work function of metal X?
A
3.0 eV/4
B
Cannot determine the work function of Metal X without knowing the photon energy E
C
1.5 eV
D
6.0 eV
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