What are cathode rays?

Write down the postulates of Bohr atom model.

What is distance of closest approach?

Define atomic mass unit u.

What is binding energy of a nucleus? Give its expression.

What is meant by radioactivity?

What is mean life of a radio active nucleus? Give the expression.

What are the constituent particles of neutron and proton?

Which ray has high ionising power? Why?

A fusion reaction is more energetic than a fission reaction. Why?

What is the reason for using lighter nuclei as moderators?

Classify the neutrons according to their kinetic energy.

What are thermal neutrons? Why are neutrons considered as ideal particles for nuclear fission?

Comment on the statement - "A nucleus contains to electrons and can eject them"

What is a reactor core?