What is the kinetic energy of the photoelectrons emitted from a sodium surface ( J) when it is irradiated by photons with a wavelength of 350 nm?
A) 2.9 1019 J
B) 5.7 1019 J
C) 0 J
D) 2.8 1019 J
E) 3.6 1019 J
Correct Answer:
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