5. What is the maximum velocity (in km/s) of a photoelectron emitted from a surface whose work function is 5.0 eV when illuminated by a light whose wavelength is 200 nm?
(A) 460
(B) 650
(C) 420
(D) 550
(E) 1480

答案:登入後查看
統計: 尚無統計資料