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Nuclear energy kaisay prapt hoti haii |
| Answer» Nuclear Energy\tAtom consists of nucleus and electrons in orbits.\tThe nucleus consists of protons (positively charged particles) and nuetrons (nuetrally charged particles)Energy is obtained from the nucleus in the following methodsNuclear Fusion: Breaking a heavy nuclei into 2 or more smaller lighter nucleiNuclear Fission : Combining 2 lighter nuclei to form a heavy nucleusUncontrolled chain reaction : In an uncontrolled nuclear fission, a heavy nucleus in bombarded with a neutron. It splits into lighter nuclei releasing 2 or more neutrons. Each neutron again bombards nuclei of atom and splits further and further. The neutrons and thereby the fission reaction exponentially increases. Eg : Atom bombControlled chain reaction : In an controlled nuclear fission, a heavy nucleus in bombarded with a neutron. It splits into lighter nuclei releasing 2 or more neutrons. But in this case, except one neutron all the other neutrons are absorbed. So, only one neutron is left. This single neutron again bombards nuclei of atom and splits further and further. Again only one neutron is left behind and the others are absorbed. So, the reaction is controlled. Eg: Nuclear generator. In a nuclear generator, nuclear energy is harnessed in a controlled manner to generate electricity. | |