JEE PHYSICS UNIT 18
QUIZ NO 4
TOTAL QUESTIONS = 20


1. The energy of an electron in the nth orbit of the hydrogen atom is


2. The wavelength of radiation emitted during the transition of an electron from n=2 to n=1 in the hydrogen atom is


3. The ionization energy of the hydrogen atom is


4. The Bohr model of the hydrogen atom was proposed by


5. The ground state energy of a hydrogen atom is


6. The binding energy per nucleon is maximum for


7. The radius of an atom is proportional to


8. The concept of nuclear fusion was introduced by


9. The wavelength of the radiation emitted when an electron jumps from n=4 to n=3 is part of the


10. The total energy of an electron in a hydrogen atom is


11. In the Bohr model of the hydrogen atom, the angular momentum of an electron in the nth orbit is quantized as


12. The energy of the emitted photon in the hydrogen atom when the electron jumps from n=2 to n=1 is


13. The half-life of a radioactive substance is 10 years. After how much time will it decay to one-eighth of its initial quantity?


14. The radius of the nth orbit of an electron in a hydrogen atom is proportional to


15. In a nuclear fission reaction, the energy is released due to


16. The primary reason for the emission of radiation in the Bohr model is


17. The ionization energy of hydrogen in its ground state is


18. In the Bohr model, the angular momentum of an electron in the nth orbit is quantized as


19. The concept of nuclear fission is associated with the release of energy due to


20. The binding energy of a nucleus is the energy required to



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