Nuclear Physics Multiple Choice Questions and Answers

11. Isotopes of an element:

1. have the same number of protons and electrons, but a different number of neutrons.
2. have the same number of protons and neutrons, but a different number of electrons.
3. have different number of protons.
4. have different number of electrons.

12. The atomic mass number is equivalent to which of the following?

1. The number of neutrons in the atom.
2. The number of protons in the atom.
3. The number of nucleons in the atom
4. The number of alpha-particles in the atom.

13. The atomic number is equivalent to which of the following?

1. The number of neutrons in the atom.
2. The number of protons in the atom.
3. The number of nucleons in the atom.
4. The number of alpha-particles in the atom.

14. The following reaction: ¹n₊₀ + ²³⁵U₉₂ -> ¹⁴¹Ba₅₆ + ⁹²Kr₃₆ + 3¹n₀ is called:

1. Fusion
2. Fission
3. alpha decay
4. beta decay

15. The following reaction: ²H₁ + ³H₊₁ -> ⁴He₂ + ¹n₀ is called:

1. Fusion
2. Fission
3. alpha decay
4. beta decay

16. What force is responsible for the radioactive decay of the nucleus?

1. Gravitational force
2. Weak Nuclear force
3. Strong Nuclear force
4. Electromagnetic force

17. What law did Ernest Rutherford use to estimate the size of the nucleus?

1. Conservation of nucleon number
2. Conservation of angular momentum
3. Conservation of linear momentum
4. Conservation of energy

18. When a nucleus is divided into its constituents, energy is:

1. created from nothing.
2. destroyed into nothing.
3. transformed into visible light.
4. absorbed by the nucleus which then breaks it apart.

19. When nucleons form a stable nucleus, binding energy is:

1. created from nothing.
2. destroyed into nothing.
3. transformed into visible light.
4. released as high energy photons or particles.

20. Which of the following about the gamma ray is true?

1. It carries a positive charge.
2. It carries a negative charge.
3. It can be deflected by a magnetic field.
4. It has zero rest mass and a neutral charge.