Question

An atom bomb is based on the principle of
A- nuclear fission
B- nuclear fusion
C- the liquid drop model
D- none of the above

Answer 1

An atom bomb works on the chain reaction and is used for destructive purposes. World war 2 was the first and the last time an atom bomb was used.
In such reactions an enormous amount of energy is produced with splitting of nuclei of radioactive elements.

Step by step answer: Both the nuclear fission and fusion are nuclear processes. On the other hand, the liquid drop model is a model of the nucleus to describe its shape and properties.
The fusion process is that process i9n which two or more lighter nuclei combine to form a heavy nucleus and with the release of enormous amounts of energy. Hydrogen bombs work on the principle of nuclear fusion.
Nuclear fission is the process in which a heavy nucleus gets split into two or more daughter nuclei. An atom bomb works on the principle of nuclear fission.

So, the correct option is (A).

Additional information: Inside the sun the energy is released by the fusion reactions taking place at very high temperatures and enormous gravitational pressures.

Note: Nuclear fusion to take place requires an enormous amount of temperature and thus often nuclear fission is first take place and when the desired temperature is reached then nuclear fusion takes place. Both fission and fusion are nuclear processes by which atoms are altered to create energy and they are opposing processes.