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 32 of 63
- A. Compton effect
- B. Photoelectric effect
- C. Zeeman effect
- D. Uncertainty principle
Explanation: The Uncertainty Principle (also called the Heisenberg uncertainty principle or indeterminacy principle) was articulated by the German…
Correct answer: Uncertainty principle- A. Charged particles
- B. Uncharged particles
- C. Neutrons
- D. All of these options are correct
Explanation: An atom is neutral if it has an equal number of protons and electrons which are charged particles. Neutrons are not charged particles.
Correct answer: Charged particles- A. Electrons
- B. Protons
- C. Neutrons
- D. None of these options is correct
Explanation: Every quark has a corresponding type of antiparticle, known as an antiquark, that differs from the quark only in some of its properties…
Correct answer: None of these options is correct- A. An isotone of the original one
- B. An isotope of the original one
- C. An isobar of the original one
- D. None of these
Explanation: Correct option is B. In alpha decay, the mass number decreases by 4 and the Atomic Number decreases by 2.
Correct answer: An isotope of the original one625. A radioactive source has a half-life of 80s. How long will it take for 7/8 of the source to decay?
- A. 10 sec
- B. 70 sec
- C. 240 sec
- D. 640 sec
Explanation: Correct option is C. Given that the half life is 80 sec ; Then lambda (λ) = 0.693/t1/2 =0.693/80 If ⅞th of the source has decade this…
Correct answer: 240 sec- A. De-excites the atom
- B. Excites the atom
- C. Scatters by atom
- D. None of these
Explanation: Excites the atom: This is the most likely outcome when a gamma photon enters a nucleus.
Correct answer: Excites the atom- A. Infinite
- B. Zero
- C. 3
- D. None of these
Explanation: Correct option is C. This process is known as fission (see diagram below).
Correct answer: 3- A. 3
- B. 6
- C. 8
- D. 12
Explanation: Quarks are a member of a group of elementary subatomic particles that interact by means of the strong force and are believed to be among…
Correct answer: 6- A. 3
- B. 1
- C. 6
- D. 8
Explanation: Quarks are fundamental particles that make up subatomic particles such as protons and neutrons.
Correct answer: 6- A. Charm
- B. Up
- C. Down
- D. Weird
Explanation: It is proposed that there are six quarks: (1) Up (2) Down (3) Strange (4) Charm (5) Bottom, and (6) Top.
Correct answer: Weird- A. Alpha
- B. All of these
- C. Beta
- D. Gamma
Explanation: Small quantities of gamma radiations are produced by the sun alongside other forms of electromagnetic waves such as x-rays, ultraviolet…
Correct answer: Gamma- A. 3
- B. 4
- C. 2
- D. 1
Explanation: The two types of particles that you need to know are hadrons and leptons.
Correct answer: 1- A. 3
- B. 1
- C. 2
- D. 4
Explanation: The composition of a Hydrogen atom is such that it has one proton and one electron.
Correct answer: 3- A. Gamma
- B. Beta positive
- C. Beta negative
- D. Alpha
Explanation: Composition-wise, an alpha particle is a helium nucleus that has an atomic mass of 4 AMU.
Correct answer: Alpha- A. Emits
- B. None of these
- C. Both emits and absorbs
- D. Absorbs
Explanation: A black body is a perfect absorber that absorbs all kinds of radiation.
Correct answer: Both emits and absorbs- A. +2/3
- B. -1/3
- C. -2/3
- D. +1/3
Explanation: The two types of sub-atomic particles that you need to know are hadrons and leptons.
Correct answer: +2/3- A. -1/3
- B. -2/3
- C. 2/3
- D. None of these
Explanation: The two types of particles that you need to know are hadrons and leptons.
Correct answer: -1/3- A. Alpha and beta have the same ionizing power
- B. Beta
- C. Gamma
- D. Alpha
Explanation: The order of ionizing power of alpha, beta, and gamma rays is as follows:Alpha > Beta > GammaAn alpha ray particle, which is a helium…
Correct answer: Alpha- A. None of these
- B. Beta rays
- C. Alpha rays
- D. Gamma rays
Explanation: Beta radiation consists of a high-energy and high-speed electron or positron (a positively charged particle with the same mass as an…
Correct answer: Beta rays- A. Proton
- B. Free electron
- C. None of these
- D. Neutron
Explanation: The nucleus is a dense, positively charged region of an atom composed of protons and neutrons.
Correct answer: Free electron