Q. Assume the graph of specific binding energy $verses\ $mass number is as shown in the figure. Using this graph, select the correct choice from the following.
A) Fusion of two nuclei of mass number lying in the range of $100 < A < 200$ will release energy.
B) Fusion of two nuclei of mass number lying in the range of $51 < A < 100$ will release energy.
C) Fusion of two nuclei of mass number lying in the range of $1 < A < 50$ will release energy.
D) Fusion of the nucleus of mass number lying in the range of $100 < A < 200$ will release energy when broken into two fragments.
Explanation
(b) When two nuclei of mass number lying in the range of 51<$A$<100 combined, then a nucleus is formed in the range 100<$A$< 150 which has high value of specific binding energy. Thus, the fusion of two nuclei of mass number lying in range of 51<$A$<100 will release energy.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.