KCET · Physics · Nuclear Physics
Pick out the correct statement from the following.
- A Energy released per unit mass of the reactant is less in case of fusion reaction
- B Packing fraction may be positive or may be negative
- C \(\mathrm{Pu}^{239}\) is not suitable for a fission reaction
- D For stable nucleus, the specific binding energy is low
Answer & Solution
Correct Answer
(B) Packing fraction may be positive or may be negative
Step-by-step Solution
Detailed explanation
Mass defect per nucleon is called packing fraction. Packing fraction \((f)=\frac{\Delta \mathrm{m}}{\mathrm{A}}=\frac{\mathrm{m}-\mathrm{A}}{\mathrm{A}}\), where \(\mathrm{m}=\) mass of nucleus, \(\mathrm{A}=\) mass number.
Packing fraction measures the stability of a nucleus. Smaller the value of packing fraction, larger is the stability of nucleus. Packing fraction may be positive, negative or zero.
Packing fraction measures the stability of a nucleus. Smaller the value of packing fraction, larger is the stability of nucleus. Packing fraction may be positive, negative or zero.
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