What does a neutron moderator do?

Write the properties of neutrino?

What is the diameter of H₂ atom?

Show that the decay rate 'R' of a sample of a radionuclide is related to the number of radioactive nuclei 'N' at the same instant by the expression R = λN.

Digine atomic mass unit. Find its energy equivalent in MeV

If the total number of neutrons and protons in a nuclear reaction is conserved how than is the energy absorbed or evolved in the reaction? Explain.

Energy released per fission of a nucleus is of the order of 200 MeV whereas that per fusion, is of the order of 10 MeV. But a fusion bomb (Hydrogen bomb) is said to be more powerful than a fission bomb. Explain why?

With respect to power generation, what are the relative advantages and disadvantages of fusion type and Fission type reactors?

What are radioactive elements? What are the factors that affect radio activity?

What are the changes observed when pressure of gas decreased in discharge tube?

List the forces involved in the Millikan's oil drop experiment.

Explain the standing wave pattern of the de Broglie wave.

Draw energy level diagram of hydrogen atom.

Write the properties of neutron.

Explain the spectral series of hydrogen which are in the infra-red region of the electromagnetic spectrum