Panic Attack
Nov2-09, 08:32 PM
1. The problem statement, all variables and given/known data
What is the maximum energy of the ejected electrons? When the radiation wavelength is 100 nm, and the stopping potential of the metal is 8.
2. Relevant equations
KE = hc/wavelenght - Wo
3. The attempt at a solution
I found the work function and the cut off wavelength to be the following but I can't figure out the max energy...
KE = hc/wavelenght - Wo
Wo = work function = { (6.63 *10^-34)(3*10^8) / (100 *10^9) } - (1.6*10^-19)(8)
Fo = cut off frequency = Wo / (6.63 *10^-34)
What is the maximum energy of the ejected electrons? When the radiation wavelength is 100 nm, and the stopping potential of the metal is 8.
2. Relevant equations
KE = hc/wavelenght - Wo
3. The attempt at a solution
I found the work function and the cut off wavelength to be the following but I can't figure out the max energy...
KE = hc/wavelenght - Wo
Wo = work function = { (6.63 *10^-34)(3*10^8) / (100 *10^9) } - (1.6*10^-19)(8)
Fo = cut off frequency = Wo / (6.63 *10^-34)