Q. Mass numbers of the elements and are and respectively. The specific binding energy of them are and respectively. Then, in which of the following reaction/s energy is released ?
(a)
(b)
(c)

 4355  237 KCETKCET 2012Nuclei Report Error

Solution:

Total binding energy for
Total binding energy for
Total binding energy for
Total binding energy for
Now, consider difference of final and initial energies for each of the reactions.
Reaction (a):


energy is absorbed
Reaction (b):


energy is released
Reaction (c):


energy is released