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(a)A particle in an infinite well is in the ground state with an energy of 1.26 eV. How much energy must be added to the particle to reach the second excited state (n = 3)? The third excited state (n = 4)? %3D (b) A beam of electrons is incident on a barrier 6 eV high and 0.2 nm wide. Find the energy they should have if 1% of them are to get through the barrier. (5+ 5)
Transcribed Image Text:(a)A particle in an infinite well is in the ground state with an energy of 1.26 eV. How much energy must be added to the particle to reach the second excited state (n = 3)? The third excited state (n = 4)? %3D (b) A beam of electrons is incident on a barrier 6 eV high and 0.2 nm wide. Find the energy they should have if 1% of them are to get through the barrier. (5+ 5)
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