A nucleus is bombarded with a high speed neutron so that resulting nucleus is a radioactive one. This phenomenon is called
Answer & explanation
Correct answer: option 3
When atoms of an element are bombarded by neutrons, the atomic nuclei are (artificially) disintegrated and emit lighter particle ( eg . α−particle,β−particle ,proton etc.).
Sometimes a neutron is observed by the nucleus which is converted into its heavier isotope and energy is emitted in the form of γ -photons.
This process in which heavy nucleus is broken into two nearly equal fragments is called nuclear fission.