How does the Binding Energy per nucleon vary with the increase in the number of nucleons? (a) Decrease continuously with mass number. (b) First decreases and then increases with increase in mass number. (c) First increases and then decreases with increase in mass number. (d) increases continuously with mass number.

Answer: (c). A≈56peak ≈ 8.8 MeV (Fe)ABE/A BE/A rises steeply for light nuclei, peaks at about 8.8 MeV near A ≈ 56 (Fe). Beyond that it falls slowly to about 7.6 MeV for A ≈ 238. So the answer is (c) first increases and then decreases.

How does the Binding Energy per nucleon vary with the increase in the… | NEET 2013

Q20NEET 2013Easy

Mass Defect & Binding Energy

How does the Binding Energy per nucleon vary with the increase in the number of nucleons?

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Answer: (c)

$BE/A$ rises steeply for light nuclei, peaks at about $8.8$ MeV near $A \approx 56$ (Fe).
Beyond that it falls slowly to about $7.6$ MeV for $A \approx 238$ .
So the answer is (c) first increases and then decreases.

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