Nuclear Physics Multiple Choice Questions
1. What is the number of a neutron in the nucleus of uranium:
A. 94
B. 145
C. 235
D. Same number
E. Different for different isotopes
2. Atom has approximately_______diameter:
A. 10-12 m
B. 10-11 m
C. 10-10 m
D. 10-14 m
3. When any nuclei having a different mass number while the same charge number is
A. Isobars
B. Similar electron
C. Isotopes
E. None of these
4. Who was measured the size of the nucleus
A. Rutherford
B. Thomson
C. Newton
D. None of these
5. The sum of a number of proton and neutron is called:
A. Atomic number
B. Mass number
C. Isotopes
D. None of these
6. Which of the following is used to detect fission reaction:
A. Mass spectrograph
B. Microscope
C. Through penetration
D. Thermometer
7. What is the Gamma-ray photon is:
A. No mass and an electric charge of +1
B. No mass and an electric charge of -1
C. No mass and no electric charge
D. No mass and electric charge is +2
8. How we define the mass number?
A. Number of protons in a nucleus
B. The complement of the atomic number
C. The number of protons plus the number of neutrons in the nucleus
D. Number of neutrons in a nucleus
9. _________ is usually expressed in a unit of Nuclear binding energy.
A. Mev
B. ev
C. kev
D. Joules
10. Uranium-235 had how many neutrons in the nucleus:
A. 231
B. 100
C. 143
D. 243
11. Which of the following is correct during fusion of hydrogen into helium:
A. Mass is increased
B. Mass is reduced
C. Energy is absorbed
D. Energy is released
12. The density of atom is uniform, Who proposed this law?
A. Rutherfords model
B. Bohrs model
C. J.J.Thomson model
D. None of these