Question 7 b(ii) , b(iii) and 7 a(ii) , 7a(i) 7. An electron is accelerated through a potential difference of 12.1 V.n =n0.54 eV0.8 eVn = 3-1.5 eVn = 2-3.4 eVn = 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 thisaccelerated 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.8. The three lowest energy levels of an atom are shown below.-1.6 eV-6.2 eVn =n = 2n = 1-18.6 eV(i) Determine the minimum energy in joule required to eject an electron initially in the lowest energy level fromthe atom.k(ii) Assuming that the energy level, n, is associated with energydetermine the energy of the level n = 4 inelectronvolts.(iii) Determine the wavelength of the electromagnetic radiation emitted when an electron makes a quantumjump from the level n3 to the level n =2. Name the region of the electromagnetic spectrum in which thisradiation is found.|||||

Given: The electron accelerated through the potential difference V = 12.1 V

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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