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 13 of 63
241. Enriched uranium is better as a fuel for a nuclear reactor because it has a greater proportion of
- A. 233U
- B. 238U
- C. 235U
- D. 239U
Explanation: C is the right option because: Enriched uranium is better as a fuel for a nuclear reactor because it has a greater proportion of…
Correct answer: 235U- A. nuclear fission
- B. gravitational contraction
- C. nuclear fusion
- D. combustion
Explanation: C is the right option because The main source of solar energy is nuclear fusion.
Correct answer: nuclear fusion- A. the use of lead shielding
- B. elastic collision with heavy nuclei
- C. passing them through water
- D. applying a strong electric field
Explanation: C is the right option because Fast neutrons can be slowed down through a process known as neutron moderation.
Correct answer: passing them through water- A. chemical
- B. physical
- C. both a and b
- D. electromagnetic
Explanation: D is the right option because Explanation: The method used to separate isotopes of an element is electromagnetic separation.
Correct answer: electromagnetic- A. sodium-24
- B. carbon-14
- C. strontium-90
- D. iodine-131
Explanation: B is the right option because The circulation of blood can be studied using a radioactive isotope, such as carbon-14, which is…
Correct answer: carbon-14- A. m/s
- B. m^-1
- C. m
- D. s^-1
Explanation: D is the right option because The decay constant, denoted by λ (lambda), represents the probability per unit time that a nucleus will…
Correct answer: s^-1- A. 100 times less:
- B. 100 times more
- C. 7000 times more
- D. 7000 times less
Explanation: B is the right option because alpha particles have several advantages over beta particles when it comes to ionization power:Mass: The much…
Correct answer: 100 times more- A. 16 hours
- B. 8 hours
- C. 4 hours
- D. 2 hours
Explanation: B is the right option because The concept of half-life indicates the time taken for half of the radioactive atoms in a sample to decay.
Correct answer: 8 hours- A. conservation of charge
- B. conservation of mass
- C. conservation of momentum
- D. all of these
Explanation: D is the right option because The disintegration of the nucleus obeys the laws of conservation of charge, conservation of mass (or…
Correct answer: all of these- A. 931.5 MeV
- B. 93.15 MeV
- C. 2.13 MeV
- D. 28.2 MeV
Explanation: A is the right option because The binding energy of Helium, like other heavy nuclei, is in the order of MeV (mega-electron volts).
Correct answer: 931.5 MeV- A. copper
- B. uranium
- C. iron
- D. cobalt
Explanation: C is the right option because Iron is considered the most stable element due to its binding energy per nucleon being the highest among all…
Correct answer: iron- A. infrared, radio, visible, x-ray
- B. Radio, visible, infrared, gamma-ray
- C. Radio, infrared, visible, gamma-ray
- D. X-ray, visible, infrared, radio
Explanation: Electromagnetic radiation consists of waves with varying frequencies. The frequency increases from radio waves to gamma rays.
Correct answer: Radio, infrared, visible, gamma-ray- A. Inaccurate measurement of mass of nucleons
- B. Mass is annihilated to produce energy to bind the nucleus.
- C. Packing fraction
- D. Difference in the number of neutrons and protons in the nucleus
Explanation: The mass defect is a measure of the energy released when a nucleus is formed, and it is related to the binding energy that holds the…
Correct answer: Mass is annihilated to produce energy to bind the nucleus.- A. 10α and 6β
- B. 4 proton and 8 neutrons
- C. 6 electrons and 8 protons:
- D. 8α and 6β
Explanation: The change in mass number is given by the difference in the mass numbers of the parent and daughter nuclei:238-206=32Each alpha particle…
Correct answer: 8α and 6β- A. 1 ms
- B. Less than 1μs
- C. More than 1 μs
- D. None of these
Explanation: The time taken in a Geiger-Muller tube for an entire electron pulse to reach the anode depends on various factors, including the specific…
Correct answer: None of these- A. Range of ionizing particle
- B. Mass of ionizing particle
- C. Charge of an ionizing particle
- D. None
Explanation: A Geiger-Muller counter is a type of radiation detector that can measure ionizing radiation and provide information about the range of the…
Correct answer: Range of ionizing particle- A. 4.23 x 10^9
- B. 3.16 x 10^10
- C. 3.61 x 10^10
- D. 2.16 x 10^10
Explanation: Calculate the decay constant (λ):The half-life (t_1/2) is related to the decay constant (λ) by the following equation:t_1/2 = ln(2) /…
Correct answer: 3.61 x 10^10- A. 1/2
- B. 1/16
- C. 1/8
- D. 1/4
Explanation: Understand the concept of half-life: The half-life of a radioactive element is the time it takes for half of the original nuclei to…
Correct answer: 1/16- A. Fast neutron
- B. Slow neutron
- C. Thermal neutron
- D. All of these
Explanation: Fast neutrons: Neutrons with high kinetic energy (around 10 MeV) can induce fission in 238U.
Correct answer: All of these- A. 10α and 6β
- B. 4 proton and 8 neutrons
- C. 6 electron and 8 proton
- D. 8α and 6β
Explanation: In the given radioactive decay, 8 alpha (α) particles and 6 beta (β) particles are emitted
Correct answer: 8α and 6β