Taking only the spin motion of electron, proton and neutron and assuming them as point particles, obtain their magnetic moments. How far the values thus obtained agree with experimental values? If not, why? Explain.
Define parity for a quantum mechanical system. Describe an appropriate experiment proving the parity violation in weak interaction. How can the parity violation in weak interaction be understood ? Explain.
Write a comparative account of the following four processes: (i) \beta - decay (ii) positron emission (iii) electron capture (iv) inverse \beta- decay
State conservation laws obeyed by strong and weak interactions.
Explain why even-even nuclei are more stable than odd-odd nuclei.
Explain parity violation in b decay.
Whet are the conservation jaws of elementary particles? How are these applied to Leptons and Baryons?
What is helicity of a neutrino? How is it measured?
Describe and experiment that confirms the existence of neutrino.
Establish the necessary equation for the liquid drop model of a nucleus. How does it explain fission?
Describe in brief a linear accelerator. How are the lengths of linear accelerator tubes calculated? Name some particles for which this technique is applied and order of energies reached.
Write an essay on elementary particles with the following points: (i) Types of particles (ii) Quantum numbers (iii) Conservation laws (iv) Types of interactions
What are weak interactions? Mention the various processes in which the weak interactions play a dominant role.
Describe the characteristics of strong nuclear force.
Write a short note on Nuclear fusion reactions.
What is the relation between decay constant, half life and mean life of a radioactive element?
What changes occur in the nuclear when a \beta- Particle is emitted? What is the role of the neutrinion \beta emission?
How is binding energy of the nuclei determined?
What is nuclear fission? How is the nuclear fission of \text{U}_{92}^{235} brought about?
Explain why Light elements like hydrogen and deuterium are effective in shielding against neutrons while heavy elements like lead are effective in case of gamma rays.