1000+ Physics Questions and Answers Pdf - 1

Question: 1

What is nuclear fission?

The process of breaking up of the nucleus of a heavy atom into two nearly equal fragments with the release of a large amount of energy is known as nuclear fission.

Question: 2

What is nuclear fusion?

The process of combining two or more lighter nuclei to form a heavier and stable nucleus with the release of large amount of energy is known as nuclear fusion.

Question: 3

What is radio activity?

The phenomenon of spontaneous emission of highly penetrating radiations by heavy elements is called radio activity.

Question: 4

What is thermo nuclear reaction?

The very high temperature released during nuclear fusion reaction is known as thermo nuclear reaction.

Question: 5

What is a coolant?

A material used to absorb the heat generated in chain reaction is called coolant. Example heavy water, liquid, sodium.