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 37 of 63
- A. Protium
- B. Deuterium
- C. Tritium
- D. All of these have the same momentum
Explanation: Option C is correct as "tritium" is the heaviest isotope of water with two neutrons and 1 proton Thu travellings will have more momentum…
Correct answer: Tritium- A. λ2 = λ1
- B. λ1 . λ2
- C. λ1 / λ2
- D. λ2/λ1
Explanation: T = 0.693/λ. Hence T1=0.693/λ1 and T2=0.693/λ2 So the value of T1/T2 would be (0.693/λ1) / (0.693/λ2), which would equate to "λ2/λ1".
Correct answer: λ2/λ1- A. Boltzmann
- B. Planck
- C. Solar constant
- D. All of these options are correct
Explanation: The "Boltzmann" constant is the proportionality factor that relates the average relative kinetic energy of particles in a gas with the…
Correct answer: Boltzmann- A. Atom
- B. U atom
- C. N atom
- D. He atom
Explanation: Deuterium-tritium fusion is a type of nuclear fusion in which one deuterium nucleus fuses with one tritium nucleus, giving "one helium…
Correct answer: He atom- A. Gray
- B. Radiation
- C. Sievert
- D. Rem
Explanation: The SI unit of measure for equivalent dose is the "sievert", defined as one Joule per kg.
Correct answer: Sievert- A. T-2
- B. T4
- C. T-4
- D. None of these
Explanation: Stefan's formula would be used here, which is as follows. Hence the correct option would be B, "T4".
Correct answer: T4- A. Electrons are increasing
- B. Protons are increasing
- C. Neutrons are increasing
- D. Any of these
Explanation: Multi electronic species are unstable, it prefers to lose electrons and form a stable octet or duplet; a "higher proton and neutron"…
Correct answer: Any of these- A. Natural
- B. Artificial
- C. Both A or B
- D. No radiation is around us
Explanation: Humans come into contact with radiation on a daily basis. These radiations are both natural, such as the rays from the sun, and…
Correct answer: Both A or B- A. Scattering
- B. Repulsion
- C. Attraction
- D. Annihilation
Explanation: When a proton and antiproton collide with each other at relatively low speeds and energies, annihilation ensues, which is the process of a…
Correct answer: Annihilation- A. Spin independent
- B. Both charge and spin independent
- C. Spin dependent but charge independent
- D. Charge dependent
Explanation: The nuclear force is nearly independent of whether the nucleons are neutrons or protons.
Correct answer: Spin dependent but charge independent- A. 3
- B. 6
- C. 9
- D. 12
Explanation: b) The deuterium atom has 6 quarks:This option is correct. As explained above, the deuterium nucleus contains 6 quarks, which are the…
Correct answer: 6- A. Alpha rays
- B. Beta rays
- C. Gamma rays
- D. All have same wavelength
Explanation: Option D is correct since wavelength and momentum are related to each other via De Broglie's equation : p = h/lambda.
Correct answer: All have same wavelength- A. 0.5 micro curies
- B. 8 micro curies
- C. 1 micro curies
- D. 2 micro curies
Explanation: Option A is correct since if the initial activity is two curies, and the half-life is 1 month, then after 2 months the activity will…
Correct answer: 0.5 micro curies- A. 0.0625 of original amount
- B. 0.5 of original amount
- C. 0.25 of original amount
- D. 0.125 of original amount
Explanation: Option C is correct since in 11400 yearstwo half-lives must have passed.
Correct answer: 0.25 of original amount- A. 131
- B. 134
- C. 136
- D. None of these
Explanation: Option B is correct since both Radon 220 and Radon 222 will have the same number of protons.
Correct answer: 134- A. 1.2 fm
- B. 2.4 fm
- C. 3.6 fm
- D. 4.8 fm
Explanation: By having a look at the atomic number of Al and Cu, it can be concluded that Cu has more protons in its nucleus than that of Al.
Correct answer: 4.8 fm- A. 1
- B. 2
- C. Half
- D. Quarter
Explanation: Spin is a quantum mechanical property of subatomic particles that is analogous to the angular momentum of a spinning object.
Correct answer: Half- A. Two times
- B. Ten times
- C. Hundred times
- D. Thousand times
Explanation: Fusion reactions are typically thousands of times stronger than fission reactions.
Correct answer: Thousand times- A. 2430 years
- B. 1080 years
- C. 3240 years
- D. 4260 years
Explanation: According to the law of Rutherford - Soddy the number of atoms left after n number of Half-life is N=N0(½)nWhere N0 is the original number…
Correct answer: 1080 years- A. A=4, Z=2
- B. A=2, Z=4
- C. A=1, Z=1
- D. A=3, Z=1
Explanation: The atomic number (Z) of helium is 2, and the mass number (A) of helium is 4.
Correct answer: A=4, Z=2