Physics
Study the diagram and answer the questions that follow:
(a) Name the nuclear process displayed in the diagram.
(b) Is it possible to conduct this process at room temperature?
(c) Mass of reactants …………… mass of the products.
[Fill in the blank using <, > or =]
Radioactivity
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Answer
(a) Nuclear fusion.
(b) No, it is not possible to conduct nuclear fusion at room temperature because when two nuclei approach, each other, due to their positive charge, the electrostatic force of repulsion between them becomes so strong that they do not fuse. Hence to make the fusion possible, a high temperature (≈ 107 K) and high pressure is required.
(c) Mass of reactants > mass of the products.
Reason : The sum of masses of the product nuclei is less than the sum of mass of the parent nucleus because this loss in mass is converted into energy according to Einstein's mass-energy relation.
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