Calculating energy of photons and colour of a laser
Light from a laser hits the surface of caesium. With a minimum photon energy of 2.14eV being required to remove photons. When the surface of caesium is illuminated with this light photoelectrons are emiited with a max kinetic energy of 0.76eV. Assuming that the Planck constant is 4.14x10^-15 eV Hz-1.
What would be the energy of the photons comprising the beam of light from the laser?
What colour would the laser be?
By OTA: Mukund Pandya, M.Sc.
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