During the freedom struggle a parallel movement launched in the Indian states (in the states ruled by the indian rulers such as Kashmir, Nizam's Hyderabad, Travancore etc) was/ were
In nuclear physics, nuclear fission is either a nuclear reaction or a radioactive decay process in which the nucleus of an atom splits into smaller parts (lighter nuclei). The fission process often produces free neutrons and releases a very large amount of energy.
Thus, The Nuclear Fission is caused by the impact of Neutrons.