In Nuclear Fusion, we join lighter lighter nucleus to make a heavier nucleus


It produces a tremendous amount of energy, and this same energy is the source of energy in Sun and Stars


The conditions required for fusion are extreme - millions of degrees of temperature and million of pascals of pressure.


In a Nuclear Bomb ,

  • Fission of Uranium or Plutonium takes place at the Core
  • This core is embedded in a substance containing Deuterium and Lithium
  • When the bomb is detonated, fission takes place and the temperature of this substance is raised to 107K  in a few microseconds.
  • This provides the conditions for fusion of lighter nuclei to take place, 
  • and due to Nuclear fusion, a devastating amount of energy is released


Nuclear Power Plants

Nuclear power plant is based on the idea of nuclear fission.


In a Nuclear Power Plant, nuclear fuel undergoes self-sustaining fission reaction,

which releases energy at a controlled rate

Kudankulam Nuclear Power Plant in Koodankulam, Tamil Nadu.jpg

Advantages of Nuclear Energy



Disadvantages of Nuclear Energy

  • Major hazard of Nuclear Power Generation is the disposal of used fuels - used Uranium still decays into subatomic particles (i.e. radiations)
  • Improper Nuclear Waste storage and disposal results in environmental contanimation
  • There is risk of leakage of Nuclear Radtion
  • The Nuclear fuels - such as Uranium has limited availability
  • Setting up a Nuclear Energy Power Plant has a high cost


  1. Class 10
  2. Chapter 14 Class 10 - Sources of Energy

About the Author

Davneet Singh's photo - Teacher, Computer Engineer, Marketer
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.