Liquid drop model, shell model, collective models, nuclear fission - Question Bank
1. The Liquid Drop Model's prediction of nuclear fission relies on the nucleus oscillating until:
2. The collective model explains the energy levels of deformed nuclei by considering them as:
3. Nuclear fission can be initiated by gamma rays, but this process, called photofission, typically requires:
4. The Collective Model can be viewed as an extension of the Shell Model that accounts for:
5. The concept of nuclear 'magic numbers' provides strong evidence for the validity of the:
6. The 'delayed neutrons' in fission are important for:
7. Which of the following is NOT a direct consequence explained by the basic Liquid Drop Model?
8. The semi-empirical mass formula's Coulomb term is proportional to:
9. The Collective Model describes nuclear shape oscillations and rotations as arising from:
10. The 'effective potential' experienced by a nucleon in the Shell Model is derived from:
11. In the context of nuclear fission, the 'fissile' nuclei are those that can undergo fission:
12. The 'pairing energy' term in the semi-empirical mass formula favors:
13. Which model is most suitable for understanding the excited states of even-even nuclei that show rotational bands?
14. The 'asymmetry energy' term in the semi-empirical mass formula accounts for:
15. The energy released per fission event for Uranium-235 is approximately:
16. Nuclear fission can be controlled in a nuclear reactor by using:
17. The collective model is particularly successful in describing the properties of nuclei that are:
18. The Shell Model predicts that nuclei with a magic number of protons or neutrons are:
19. Which aspect of nuclear structure is NOT well explained by the Liquid Drop Model?
20. The semi-empirical mass formula, derived from the Liquid Drop Model, includes terms for:
21. The 'prompt neutrons' emitted during fission are:
22. Nuclear fission is most readily induced in nuclei that are:
23. The collective model explains the excitation of nuclei to higher energy states through:
24. In the context of the Shell Model, the 'j-j coupling' scheme describes:
25. The shell corrections to the Liquid Drop Model are important for understanding:
26. Spontaneous fission is a type of radioactive decay that occurs without:
27. The fission barrier height can be estimated using:
28. A critical mass is the minimum amount of fissile material required to sustain a:
29. The chain reaction in nuclear fission is sustained by:
30. Which of the following is a common fissile isotope of Uranium?
31. The Liquid Drop Model explains nuclear fission as a process involving:
32. The energy released during nuclear fission is primarily due to:
33. Which particle is typically used to induce fission in heavy nuclei like Uranium?
34. Nuclear fission is a process where:
35. The Collective Model combines aspects of which two simpler models?
36. In deformed nuclei, the Collective Model predicts energy levels that follow patterns characteristic of:
37. The Collective Model explains phenomena like:
38. Which model incorporates both individual particle motion and collective behavior of nucleons?
39. The concept of 'spin-orbit coupling' is crucial in the Shell Model for:
40. Magic numbers in nuclear physics, such as 2, 8, 20, 28, 50, 82, and 126, correspond to:
41. The success of the Shell Model lies in its ability to explain:
42. In the Nuclear Shell Model, nucleons are assumed to move in:
43. The Shell Model of the nucleus is analogous to:
44. Which phenomenon is well explained by the Liquid Drop Model's semi-empirical mass formula?
45. The volume energy term in the Liquid Drop Model suggests that binding energy is:
46. The Coulomb energy term in the Liquid Drop Model represents:
47. In the Liquid Drop Model, the surface energy term accounts for:
48. The binding energy per nucleon in the Liquid Drop Model is primarily dependent on which terms?
49. Which model treats the nucleus as a uniformly charged liquid drop?