Figure shows a hypothetical binding energy per nucleon (B.E/A); versus

1.	Figure shows a hypothetical binding energy per nucleon (B.E/A); versus (mass number) A curve. Which of the following statements is correct?(1) Fusion of nuclei, having mass number in the range 20 < A < 50, will release energy (2) Fission of nuclei, having mass number in the range 50 < A < 100, will release energy (3) Fusion of nuclei, having mass number in the range 60 < A < 100, will release energy (4) Fission of nuclei, having mass number in the range 125 < A < 175, will release energy, if the two fragments are identical
Answer» Correct option : (3) Explanation : Energy is released in a nuclear (fission or fusion) reaction, if the binding energy per nucleon of the products, is more than that for reactants. This is so only far statement (3). In all the other statements, B.E/nucleon, of products, is less than that of the reactants. In such a process energy, has to be absorbed.

Figure shows a hypothetical binding energy per nucleon (B.E/A); versus (mass number) A curve. Which of the following statements is correct?(1) Fusion of nuclei, having mass number in the range 20 < A < 50, will release energy (2) Fission of nuclei, having mass number in the range 50 < A < 100, will release energy (3) Fusion of nuclei, having mass number in the range 60 < A < 100, will release energy (4) Fission of nuclei, having mass number in the range 125 < A < 175, will release energy, if the two fragments are identical

Answer»

Correct option : (3)

Explanation :

Energy is released in a nuclear (fission or fusion) reaction, if the binding energy per nucleon of the products, is more than that for reactants. This is so only far statement (3). In all the other statements, B.E/nucleon, of products, is less than that of the reactants. In such a process energy, has to be absorbed.

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