When it is struck by 240-nm photons, a material having a work function of 2.60 eV emits electrons. What is the maximum kinetic energy of the emitted electrons? (c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s, 1 eV = 1.60 × 10-19 J)
A) 2.58 eV
B) 5.18 eV
C) 2.00 eV
D) 4.21 eV
A
Physics & Space Science
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