Ultraviolet light of wavelength 350 nm and intensity 1.00 W/m2 is directed at a potassium surface.The maximum kinetic energy of the photoelectrons is()
Ultraviolet light of wavelength 350 nm and intensity 1.00 W/m2 is directed at a potassium surface.The maximum kinetic energy of the photoelectrons is()
A.17.6 eV
B.4.42×10-19 J
C.3.5 eV
D.6.9 eV
正确答案:3.5 eV
Tag:原子物理
时间:2024-01-03 15:10:24
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