Q157 / 160 · TS EAMCET 2020 (11 Sep Shift 2) · Physics

The binding energy (BE) per nucleon for an element is $7.14 \mathrm{MeV}$. If the $\mathrm{BE}$ of element is $28.6 \mathrm{MeV}$, then the number of nucleons in the element is

  • Correct answer
    A
    4
  • B
    8
  • C
    16
  • D
    32

Solution

Given, binding energy (BE) per nucleon $=7.14 \mathrm{MeV}$ $\mathrm{BE}$ of element $=28.6 \mathrm{MeV}$ We know that, $\text { Number of nucleons }=\frac{\text { BE of element }}{\text { BE per nucleon }}=\frac{28.6}{7.14}=4$

Hence, the correct answer is option: 'A'.

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