The energy produced during a nuclear reaction such as nuclear fission or fusion is called nuclear energy.
In the process of nuclear fission, the nucleus of a heavy atom (such as uranium, plutonium or thorium),when bombarded with low-energy neutrons, can be split apart into lighter nuclei.
When this is done, a tremendous amount of energy is released.
Advantages of nuclear energy:-
A small quantity of nuclear fuel is needed to produce a large amount of useful energy.
Nuclear power plants produce less atmospheric pollution (less emission of greenhouse gases) than other power plants, if the nuclear fission reaction is performed properly.
It is a reliable source of energy. Unlike wind or solar energy, it can produce energy even in adverse weather conditions.
There is less availability of nuclear fuel (uranium) in our country.
Also, the construction of nuclear power plants and the cost of power generation is greater as compared to other sources of energy.
Mainly, there is high risk of environmental contamination (due to radioactive waste).