Question

An atom bomb works on:
A. Electrical energy
B. Heat energy
C. Mechanical energy
D. Atomic energy

Answer 1

Hint: An atom bomb is a nuclear weapon, which is an explosive device which gets its destructive power from nuclear reactions (nuclear fission). The question talks about the kind of energy that the atomic bomb operates with and how and in what mode the energy can be created.

Complete step by step answer:
The atomic bomb is a device that depletes or breaks up as a result of heat generated, so basically the weapon (atomic bomb) releases enormous amounts of heat. In atom bombs, much nuclear fission happens which releases huge nuclear energy. Nuclear fission is the process of dividing the single nucleus into two or more other smaller nuclei of an atom.
Electrical energy is seen or can be observed in electric lamps or bulbs where the electric current is allowed to move within the circuit and light energy is now seen when the lamp or bulb glows.
 Heat energy is produced from a source with high or extremely high temperature, where temperature is the driving force and the determining factor.
Mechanical energy can be observed in the operation of some factory machineries, it can either be a kinetic energy or potential energy dependent on the state of the object.
Therefore, the answer is option D, which is atomic energy, also called nuclear energy, is used to make an atom bomb work.

Note: We can see other practical examples of atomic energy or nuclear energy where fission and fusion is applicable, e.g in nuclear reactors and also in bullets and explosives. Nuclear fusion is not the same as nuclear fusion, fission is dividing the bigger nucleus and fusion is combining two or more smaller nuclei.