Discussion
Atom bomb is based on
Answer: B
The atom bomb is based on nuclear fission.
In an atom bomb, heavy nuclei of uranium-235 or plutonium-239 split when struck by neutrons, releasing enormous energy and more neutrons, which split further nuclei in an uncontrolled chain reaction. The bombs dropped on Hiroshima and Nagasaki in 1945 were fission weapons.
Nuclear fusion, the joining of light nuclei, is the basis of the hydrogen bomb, which uses a fission bomb to trigger it. A chemical reaction releases far less energy and powers ordinary explosives.
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