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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- A. 04.8 MeV
- B. 13.6 MeV
- C. 23.6 MeV
- D. 25.8 MeV
- E. 26.2 MeV
Explanation: The energy released when two deuterons fuse to form a helium nucleus can be calculated using the formula:1H² + H² →2 He* + Qwhere Q is the…
Correct answer: 23.6 MeV- A. Proton: 1u + 1d, Neutron: 2u + 1d
- B. Proton: 2u + 2d, Neutron: 2u + 1d
- C. Proton: 2u + 1d, Neutron: 1u + 2d
- D. Proton: 1/3 u + 2/3 d, Neutron: 2/3 u + 1/3 d
- E. Proton: 1/3 u + 1/3 d, Neutron: 2/3 u + 2/3 d
Explanation: Protons and neutrons are composed of quarks. Protons contain two up quarks and one down quark, while neutrons contain one up quark and two…
Correct answer: Proton: 2u + 1d, Neutron: 1u + 2d- A. 0.0625 of the original amount
- B. 0.5 of the original amount
- C. 0.25 of the original amount
- D. 0.125 of the original amount
Explanation: 2 half-lives have passed so one-fourth of the sample remains.
Correct answer: 0.25 of the original amount- A. 1
- B. 1/2
- C. 3/4
- D. 1/4
Explanation: Correct option is C. The correct solution is given as:
Correct answer: 3/4- A. Diffuse
- B. Decompose
- C. Disturbed
- D. Decay
Explanation: The term "decay" is the correct option. The half-life of a radioactive element is the time it takes for half of the radioactive atoms in a…
Correct answer: Decay- A. 2400 years
- B. 3200 years
- C. 6400 years
- D. 4800 years
Explanation: Two half lives later, 100g of gamma rays will be reduced to 25g. 100/2² = 25 The half life of Radium = 1600 yearsTime taken = 2×1600 =…
Correct answer: 3200 years- A. 67 %
- B. 87.5%
- C. 82.5%
- D. 77%
Explanation: To solve this problem, we first determine how many half-lives have passed in 15 days.
Correct answer: 87.5%- A. 120 minutes
- B. 90 minutes
- C. 30 minutes
- D. 60 minutes
Explanation: N(t) = N0 * (1/2)^(t / T),In this case, N(t) is 125 per minute, No is 1000 per minute, and T is 40 minutes.
Correct answer: 120 minutes- A. I-113
- B. I-120
- C. I-131
- D. I-140
Explanation: Because of this, radioactive iodine (RAI, also called I-131) can be used to treat thyroid cancer.
Correct answer: I-131- A. Carbon-14
- B. Carbon-12
- C. Phosphorus-3
- D. Sodium-24
Explanation: Salt solutions containing compounds of sodium-24 are injected into the bloodstream to help locate obstructions to the flow of blood and…
Correct answer: Sodium-24- A. leukemia
- B. radiation sickness
- C. skin cancer
- D. gene mutations
- E. all of the above
Explanation: Radiation can lead to multiple adverse health effects, including leukemia, radiation sickness, skin cancer, and gene mutations.
Correct answer: all of the above- A. Kidney Function
- B. Plasma Blood Volume
- C. Iron in Plasma
- D. Thyroid Function
Explanation: The sodium-24 isotope is used to study the circulation of blood. Sodium-24 (Na-24) IS commonly used in medicine for estimating plasma…
Correct answer: Plasma Blood Volume- A. 6 hours
- B. 15 hours
- C. 8 hours
- D. 15 days
Explanation: Sodium-24 is a radioactive isotope of sodium with a half-life of approximately 15 hours.
Correct answer: 15 hours- A. UV
- B. IR
- C. X rays
- D. gamma rays
Explanation: The greenhouse effect is when some of the infrared radiation (IR) from the Sun passes through the atmosphere, but most is absorbed and…
Correct answer: IR- A. Fractures
- B. Temperature
- C. Blood pressure
- D. All of these
Explanation: X-ray uses a very small dose of ionising radiation to produce pictures of any bone in the body.
Correct answer: Fractures- A. Inverted
- B. Real
- C. Both A and B
- D. Virtual
Explanation: X-rays are electromagnetic waves that can penetrate through materials and are used in various medical and industrial applications…
Correct answer: Both A and B- A. Beta particles
- B. Alpha particles
- C. Protons
- D. Gamma particles
Explanation: A Wilson cloud chamber is a radiation detecting chamber. It contains a supersaturated vaporized liquid that condenses around ions or…
Correct answer: Gamma particles- A. Neutron radiation
- B. Alpha radiation
- C. Gamma radiation
- D. All of them
Explanation: The release of radiation is a phenomenon unique to nuclear explosions. There are several kinds of radiation emitted; these types include…
Correct answer: All of them- A. Interference
- B. Polarization
- C. Absorption
- D. Diffraction
Explanation: Beta rays are high-speed electrons or positrons that are emitted from the nucleus during beta decay.
Correct answer: Diffraction- A. Beta
- B. Gamma
- C. He-Ne laser
- D. None of these
Explanation: Among the three types of common radiation, alpha particles have the highest ionization power.Alpha particles are composed of two protons…
Correct answer: None of these