6.1 Nature of Light and the Photoelectric Effect
CHECK OUT CHAD'S
PRE-HEALTH PREP
PRE-HEALTH PREP
Table of Contents
Add a header to begin generating the table of contents
Electromagnetic Radiation
| Wavelength, Frequency, and Energy of Photons | |||
|---|---|---|---|
| λν = c | λ = wavelength | ν = frequency | c = 3.0×108m/s speed of light |
| Ephoton = hν | h = 6.626×10-34J•s (Planck’s constant) | ν = frequency | |
| Ephoton = hc / λ | h = 6.626×10-34J•s (Planck’s constant) | λ = wavelength | c = 3.0×108m/s speed of light |
What is the frequency and energy of a photon of wavelength 400nm?
Photoelectric Effect
K.E.electron = Ephoton - ɸ
ɸ = work function i.e. the minimum energy to ionize an electron
1 ejected electron per photon (if it is above the threshold)
