3

What nuclear reaction would release more energy, the fission reaction or the fusion reaction? Explain.



Class 10th physics notes


Q: What nuclear reaction would release more energy, the fission reaction or the fusion reaction? Explain.

 Ans: In the fission reactions, the energy released is 3 to 4 times less than that of fusion reactions.
Explanation is given below:

 In fission reactions, heavier nuclei breaks up into lighter nuclei, with release of energy.
Example:
Uranium Fission example
In this reaction, about 177Mev energy is released per reaction.

In fusion reactions, two lighter nuclei combine to form heavy nuclei, with release of energy.
Example:
Fusion of deuterium and tritium
In this fusion reaction about 17.6Mev energy is released per reaction.

It shows energy released by fission 177Mev is greater than energy released by fusion 17.6Mev.


But I have said earlier fusion release more energy: 


1 neutrons + 235 U= 236 g release 177Mev energy.

Deuterium + Tritium= 5 g release 17.6Mev energy.



But if we take 236 g of hydrogen then:


(17.6/5)*236= 830.72Mev energy, which is 3-4 times greater  than above fission event.



Therefore, energy released by fusion reaction is greater than fission reactions.

Unknown

Hello I am Adnan Karim, a Student, blogger, Programmer. I am Here To Help You. You Can ask me Anything at https://www.Ask.fm/adnanskiwordy

3 comments:

  1. UnknownDecember 23, 2017 at 1:23 PM

    Amazing Explanation.
    I am a student, I was experiencing some problem related this question but after reading this, I am blown away.
    Thank You.

    ReplyDelete
  2. AnonymousFebruary 20, 2018 at 4:07 PM

    Sir/madam in the question here's a little bit confusion i want to be clear so please tell me that in the first fission reaction you have written that" In this reaction, about 177Mev energy is released per reaction." But in the fusion you have written" It shows energy released by fission 200Mev is greater than energy released by fusion 17.6Mev."

    The energy realesed are different a little i know that energy realesed by fission is 200MeV so why dont u write just one figure 200 or 177 MeV. Plz guide me in this problem

    ReplyDelete