Question
This question contains Statement-1 and statement-2. Of the
four choices given after the statements, choose the one that best describes the two statements.
Statement-1:
Energy is released when heavy nuclei undergo fission or light nuclei undergo fusion and
Statement-2 :
For heavy nuclei, binding energy per nucleon increases with increasing $$Z$$ while for light nuclei it decreases with increasing $$Z.$$
A.
Statement-1 is false, Statement-2 is true
B.
Statement-1 is true, Statement-2 is true; Statement-2 is a correct explanation for Statement-1
C.
Statement-1 is true, Statement-2 is true; Statement-2 is not a correct explanation for Statement-1
D.
Statement-1 is true, Statement-2 is false
Answer :
Statement-1 is true, Statement-2 is false
Solution :
We know that energy is released when heavy nuclei undergo fission or light nuclei undergo fusion. Therefore statement (1) is correct.
The second statement is false because for heavy nuclei the binding energy per nucleon decreases with increasing $$Z$$ and for light nuclei, $$B.E$$ /nucleon increases with increasing $$Z.$$