Question

(a) What is the source of energy of the sun and other stars?
(b) Describe the working of a hydrogen bomb.
(c) What is common between the sun and a hydrogen bomb?

Answer 1

(a) The sun and other stars obtain their energy from the nuclear fusion reactions of hydrogen. So, hydrogen can be considered a source of energy.

(b) We know that a hydrogen bomb consists of deuterium, tritium and lithium. A hydrogen bomb is exploded by using an atom bomb. When an atom bomb is exploded, much heat is produced, which raises the temperature of deuterium and tritium to an extent in a small time. At this temperature, fusion reactions of deuterium and tritium take place, producing a tremendous amount of energy. This process causes the explosion of a hydrogen bomb, releasing an enormous amount of energy in a very short time.

(c) In the sun as well as in a hydrogen bomb, energy is produced by nuclear fusion reactions of hydrogen.