Free Nuclear Physics MCQs with Answers
1,254 Nuclear Physics MCQs from Physics, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Atomic nuclei contain protons and neutrons, with nuclear size, mass defect and binding energy describing their stability. The work covers alpha, beta and gamma decay, decay equations, half-life and decay rate, along with radiation safety and medical applications such as imaging, radiotherapy and tracers.
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1,254 questions · page 21 of 63
- A. High temperatures increase the nuclear radius
- B. High temperatures overcome Coulomb repulsion
- C. High temperatures reduce neutron emission
- D. High temperatures weaken the strong nuclear force
Explanation: Fusion requires positively charged nuclei to overcome their mutual Coulomb repulsion.
Correct answer: High temperatures overcome Coulomb repulsion- A. Electron and neutrino, 5 x 10^5 atoms
- B. Electron and antineutrino, 5 x 10^5 atoms
- C. Positron and neutrino, 1 x 10^6 atoms
- D. Positron and antineutrino, 1 x 10^6 atoms
Explanation: In beta minus decay, a neutron decays into a proton, emitting an electron and an antineutrino.
Correct answer: Electron and antineutrino, 5 x 10^5 atoms- A. High neutron excess, 127.3 MeV
- B. High Coulomb repulsion, 127.3 MeV
- C. Weak nuclear force, 137.3 MeV
- D. Low proton number, 137.3 MeV
Explanation: Heavy nuclei are less stable due to increased Coulomb repulsion between protons, which counteracts the strong nuclear force.
Correct answer: High Coulomb repulsion, 127.3 MeV- A. Thorium, Uranium, Neutron
- B. Uranium, Thorium, Neutron
- C. Thorium, Uranium, Alpha
- D. Uranium, Thorium, Alpha
Explanation: Here, the parent nucleus is "238U92"uranium (146+92=238), thorium is "234Th90"(144+90=234) the daughter nucleus and the emited radiation…
Correct answer: Uranium, Thorium, Alpha- A. A
- B. B
- C. C
- D. D
Explanation: Radioactive decay typically follows an exponential decay curve, where the activity decreases with time.
Correct answer: D- A. 1, 2, 3
- B. 2, 1, 3
- C. 1, 3, 2
- D. 2, 3, 1
Explanation: More Steeper the curve means less half-life of sample.
Correct answer: 1, 2, 3- A. Alpha
- B. Beta
- C. Gamma
- D. Cathode Rays
Explanation: 1 is the particle that remains undeflected which means it does not have charge, which is gamma rays.
Correct answer: Gamma- A. 212S84
- B. 212S82
- C. 220S80
- D. 210S82
Explanation: After two α-emissions, the values for nuclide S would be: Atomic number (Z): 86 - (2 x 2) = 86 - 4 = 82 Mass number (A) 220 - (2 x 4) =…
Correct answer: 220S80- A. A
- B. B
- C. C
- D. D
Explanation: Number of neutrons in radon(Rn ) =220-86=134 Number of neutrons in polonium(Po) =216-84=132.
Correct answer: B- A. Einstein
- B. Dalton
- C. Newton
- D. J.J. Thomson
Explanation: Explanation for this question will be added soon!
Correct answer: Dalton- A. Millikan
- B. Chadwick
- C. Bohr
- D. J.J. Thomson
Explanation: Explanation for this question will be added soon!
Correct answer: J.J. Thomson- A. Ampere
- B. Millikan
- C. Maxwell
- D. Bohr
Explanation: Explanation for this question will be added soon!
Correct answer: Millikan- A. Discrete
- B. Continuous
- C. Both continuous and discrete
- D. All of above
Explanation: Explanation for this question will be added soon!
Correct answer: Discrete- A. A liquid
- B. A solid
- C. A gas at low pressure
- D. A gas at high pressure
Explanation: Explanation for this question will be added soon!
Correct answer: A gas at low pressure- A. 1895
- B. 1916
- C. 1905
- D. 1909
Explanation: Explanation for this question will be added soon!
Correct answer: 1909- A. Bohr
- B. Millikan
- C. J.J. Thomson
- D. Rutherford
Explanation: Explanation for this question will be added soon!
Correct answer: Rutherford- A. 10-10m
- B. 10-13m
- C. 10-16m
- D. 10-14m
Explanation: Explanation for this question will be added soon!
Correct answer: 10-14m- A. 1917
- B. 1920
- C. 1910
- D. 1915
Explanation: Explanation for this question will be added soon!
Correct answer: 1917- A. Nitrogen
- B. Oxygen
- C. Gold foil
- D. Beryllium
Explanation: Explanation for this question will be added soon!
Correct answer: Beryllium- A. Nucleons
- B. Atomic particles
- C. Photons
- D. Phenons
Explanation: Explanation for this question will be added soon!
Correct answer: Nucleons