Speed of light:
The energy of electromagnetic radiation:
h is plank's constant.
f = c/λ = (3.0 × 108)/(272 × 10-9) = 1.10 × 1015 hz
The photoelectric threshold wavelength of a tungsten surface is 272 nm .
What is the threshold frequency of this tungsten?
What is the work function (in eV ) of this tungsten?
Calculate the maximum kinetic energy (in eV ) of the electrons ejected from this tungsten surface by ultraviolet radiation of frequency 1.48×1015 Hz.
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