Author Question: What is the maximum velocity (in km/s) of a photoelectron emitted from a surface whose work function ... (Read 58 times)

neverstopbelieb · **on:** Jul 28, 2018

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. 1 480

Question 2

The threshold wavelength for photoelectric emission of a particular substance is 500 nm. What is the work function (in eV)?
a. 4.2
b. 4.0 10-19
c. 4.0 10-10
d. 2.5 10-19
e. 2.5