Correct option is C
The correct answer is (c) (a) – (2), (b) – (1), (c) – (4), (d) – (3).
· Hydrogen bomb (Fusion): The hydrogen bomb operates on the principle of nuclear fusion, where light nuclei combine to form heavier nuclei, releasing a tremendous amount of energy.
· Atom bomb (Fission): The atom bomb works on nuclear fission, where heavy nuclei split into lighter nuclei, releasing energy.
· Binding energy (Mass defect): Binding energy is related to the mass defect, which is the difference between the mass of a nucleus and the sum of the masses of its constituent protons and neutrons.
· Nuclear reactor (Critical mass): A nuclear reactor requires a critical mass to sustain a controlled nuclear chain reaction.