Which of the following reactions violates lepton number conservation?
Select an option to see the answer and solution.
Engineering Physics · all questionsNuclear and Particle Physics
Nuclear and Particle Physics
practice.
Practice every MCQ with options. Use Show answers when you want the correct option and solution.
70
Questions
2/4
Page
Pick an option on a question to see the right answer and solution.
Fission fragments are generally radioactive as
Select an option to see the answer and solution.
In the nuclear shell model the spin parity of 15N is given by
Select an option to see the answer and solution.
The disintegration energy is defined to be the difference in the rest energy between the initial and final states. Consider the following process:
The emitted α-particle has a kinetic energy 5.17 MeV. The value of the disintegration energy is
The emitted α-particle has a kinetic energy 5.17 MeV. The value of the disintegration energy is
Select an option to see the answer and solution.
The volume of a nucleus in an atom is proportional to the
Select an option to see the answer and solution.
The interaction potential between two quarks, separated by a distance r inside a nucleon can be described by (a, b and β are positive constants)
Select an option to see the answer and solution.
According to the Quark model, the K+ meson is composed which of the following quarks
Select an option to see the answer and solution.
According to the single particle nuclear shell model, the spin parity of the ground state of is
Select an option to see the answer and solution.
A ferromagnetic mixture of iron and copper having 75% atoms of Fe exhibits a saturation magnetization of 1.3 × 106 Am-1. Assume that the total number of atoms per unit volume is 8 × 1028 m-3. The magnetic moment of an iron atom in terms of the Bohr magneton is
Select an option to see the answer and solution.
Which one of the following nuclear processes is forbidden?
Select an option to see the answer and solution.
Which of the following expressions for total binding energy B of a nucleus is correct (a1, a2, a3, a4 > 0?
Select an option to see the answer and solution.
The ground state wave function of deuteron is in a superposition of s and d states. Which of the following is not true as a consequence?
Select an option to see the answer and solution.
According to the shell model the ground state spin of the 17O nucleus is
Select an option to see the answer and solution.
Two spin-1/2 fermions having spins and interact via a potential The contributions of this potential in the singlet and triplet states, respectively are
Select an option to see the answer and solution.
A stationary particle in free space is observed to spontaneously decay into two photons. This implies that
Select an option to see the answer and solution.
Nuclear forces are
Select an option to see the answer and solution.
Match the reactions on the left with the associated interactions on the right.
| 1. π+ → μ+ + vμ | i. Strong |
| 2. π0 → γ + γ | ii. Electromagnetic |
| 3. π0 → n → π- + p | iii. Weak |
Select an option to see the answer and solution.
A neutron passing through a detector is detected because of
Select an option to see the answer and solution.
Half-life of a radioisotope is 4 × 108 years. If there are 103 radioactive nuclei in a sample today, the number of such nuclei in the sample 4 × 109 years ago were
Select an option to see the answer and solution.
The threshold temperature above which the thermonuclear reaction can occur is (use e2/4πε0 = 1.44 × 10-15 MeV-m)
Select an option to see the answer and solution.