Binding Energy per Nucleon — Practice Quiz

Question 1

Mass defect of a nucleus is 0.0529 u. Binding energy is:

Accepted Answer

49.3 MeV

Answer

9.31 MeV

Answer

529 MeV

Answer

0.0529 MeV

Question 2

Binding energy per nucleon peaks near:

Accepted Answer

A = 56 (Fe)

Answer

A = 4 (He)

Answer

A = 100

Answer

A = 238 (U)

Question 3

Mass defect of ⁴₂He: 2(m_p + m_n) − m_He = 0.0303 u. Binding energy:

Accepted Answer

28.2 MeV

Answer

9.4 MeV

Answer

2.82 MeV

Answer

282 MeV

Question 4

Why is fusion of light nuclei energy-releasing?

Accepted Answer

Products have lower mass per nucleon, freeing energy as mass-defect × c²

Answer

Light nuclei have negative B/A

Answer

Coulomb force becomes attractive

Answer

Nucleons split

Question 5

Binding energy is the energy required to:

Accepted Answer

Separate the nucleus into individual nucleons

Answer

Add another proton

Answer

Break a single bond

Answer

Excite the nucleus