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29 Mar 2020
(a) A green laser pointer emits light with a wavelength of
532 nm. What is the frequency of this light? (b) What is the energy of one of these photons? (c) The laser pointer emits light because electrons in the material are excited (by a battery) from their ground state to an upper excited state. When the electrons return to the ground state, they lose the excess energy in the form of 532-nm photons. What is the energy gap between the ground state and excited state in the laser material?
c) The energy gap between ground state and excited state corresponds to the energy of the light emitted. As wavelength of emitted photons is 532 nm, energy gap is:
(a) A green laser pointer emits light with a wavelength of
532 nm. What is the frequency of this light? (b) What is the energy of one of these photons? (c) The laser pointer emits light because electrons in the material are excited (by a battery) from their ground state to an upper excited state. When the electrons return to the ground state, they lose the excess energy in the form of 532-nm photons. What is the energy gap between the ground state and excited state in the laser material?
c) The energy gap between ground state and excited state corresponds to the energy of the light emitted. As wavelength of emitted photons is 532 nm, energy gap is:
Irving HeathcoteLv2
14 May 2020