Question

Statement 1: Energy is released when heavy nuclei undergo fission or light nuclei undergo fusion and
Statement II: For heavy nuclei, binding energy per nucleon increases with increasing Z while for light nuclei it decrease with increasing Z

• A. Statement 1 is false, statement 2 is true
• B. Statement 1 is false, statement 2 is true, statement 2 is correct explanation for statement 1
• C. Statement 1 is false, statement 2 is true, statement 2 is not the correct explanation for statement 1
• D. Statement 1 is true, statement 2 is false

Answer 1

Answer: (D)

Statement 1 is true, statement 2 is false

$\begin{array}{c}\text{In nuclear fission or}\\ \text{fusion, energy is released.}\\ \text{Binding energy per nucleon}\\ \text{increase with increase}z\text{for}\\ \text{heavy nuclei and decrease with}\\ \text{decrease}z\text{for light nuclei.}\\ \text{Both are true}\\ \text{and correct explanation.}\end{array}$