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Class 12 Physics Practice Test: Alpha-Particle Scattering and Rutherford's Nuclear Model of Atom
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Class 12 Physics Practice Test: Alpha-Particle Scattering and Rutherford's Nuclear Model of Atom
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10 Questions

1. If an α-particle collides head-on with a nucleus, what is its impact parameter?
2. According to Bohr’s principle, what is the relation between the principal quantum number and the radius of the orbit?
3. What is the valence electron in alkali metal?
4. The kinetic energy of the α-particle incident on the gold foil is doubled. The distance of closest approach will also be doubled.
5. An α-particle of energy 10 MeV is scattered through 180o by a fixed uranium nucleus. Calculate the order of distance of the closest approach?
6. The atomic number of silicon is 14. Its ground state electronic configuration is
7. Which of the following did Bohr use to explain his theory?
8. In which of the following system, will the radius of the first orbit (n=1) be minimum?
9. Of the following pairs of species which one will have the same electronic configuration for both members?
10. Based on the Bohr model, what is the minimum energy required to remove an electron from the ground state of Be atom? (Given: Z = 4)

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