7. An electron is accelerated through a potential difference of 12.1 V. n = 5 -0.54 eV 0.8 eV n = 3 -1.5 eV n = 2 -3.4 eV n = 1 -13.6 eV (a) How much kinetic energy has it gained in (i) electronvolts (ii) joules? (b) This electron hits a hydrogen atom and excites it. (i) Explain what is meant by excitation (ii) Using the energy values given in the diagram above, work out the two energy levels between which this accelerated electron will likely produce a transition. (iii) Calculate the energies of the three photons that might be emitted as the electron return to the ground state.
7. An electron is accelerated through a potential difference of 12.1 V. n = 5 -0.54 eV 0.8 eV n = 3 -1.5 eV n = 2 -3.4 eV n = 1 -13.6 eV (a) How much kinetic energy has it gained in (i) electronvolts (ii) joules? (b) This electron hits a hydrogen atom and excites it. (i) Explain what is meant by excitation (ii) Using the energy values given in the diagram above, work out the two energy levels between which this accelerated electron will likely produce a transition. (iii) Calculate the energies of the three photons that might be emitted as the electron return to the ground state.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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