GRE Subject 2026 Practice Test Physics Nuclear Physics Free Quiz 1

1. What does nuclear physics study?

A. Atomic nuclei and their interactions B. Motion of objects C. Electricity and magnetism D. Heat and temperature

2. What is the atomic number?

A. Number of neutrons B. Mass number C. Number of electrons D. Number of protons

3. What is the mass number?

A. Number of protons B. Protons + neutrons C. Number of electrons D. Number of neutrons

4. What are atoms with the same number of protons but different neutrons?

A. Isotopes B. Isobars C. Isotones D. Isomers

5. What are atoms with the same number of neutrons?

A. Isotopes B. Isobars C. Isomers D. Isotones

6. What is the energy required to separate a nucleus into its components?

A. Ionization energy B. Nuclear binding energy C. Dissociation energy D. Chemical energy

7. What is the difference between the mass of a nucleus and the sum of its nucleons?

A. Mass defect B. Binding energy C. Q-value D. Decay constant

8. What particle is emitted in beta decay?

A. Alpha B. Gamma C. Neutron D. Beta

9. What is the time for half of a radioactive substance to decay?

A. Half-life B. Mean life C. Decay constant D. Activity

10. What is the relationship between the decay constant and half-life?

A. λ = T½/ln(2) B. λ = ln(2)T½ C. λ = ln(2)/T½ D. λ = 1/T½