Binding Energy

Q.

The binding energy per nucleon of $O^{16}$ is 7.97 MeV and that of $O^{17}$ is 7.75 MeV. Then, the energy (in MeV) required to remove a neutron from $O^{17}$ is

1. 3.52

2. 3.64

3. 7.86

4. 4.23

Q.

Given the masses of various atomic particles ${\mathrm{m}}_{\mathrm{p}}=1.0072\mathrm{u},{\mathrm{m}}_{\mathrm{n}}=1.0087\mathrm{u},{\mathrm{m}}_{\mathrm{e}}=0.000548\mathrm{u},{\mathrm{m}}_{\mathrm{v}\left(\mathrm{bar}\right)}=0,{\mathrm{m}}_{\mathrm{d}}=2.0141\mathrm{u},$where $\mathrm{p}\equiv \mathrm{proton},\mathrm{n}\equiv \mathrm{neutron},\mathrm{e}\equiv \mathrm{electron},\mathrm{v}\left[\mathrm{bar}\right]\equiv \mathrm{antineutrino}$ and $\mathrm{d}\equiv \mathrm{deuteron}.$ Which of the following processes is allowed by momentum and energy conservation?

1. $\mathrm{n}+\mathrm{n}\mathrm{deuterium}\mathrm{atom}$ (electron bound to the nucleus)

2. ${\mathrm{e}}^{+}+{\mathrm{e}}^{-}\to \mathrm{\gamma }$

3. $\mathrm{p}\to \mathrm{n}+{\mathrm{e}}^{+}+\mathrm{v}\left[\mathrm{bar}\right]$

4. $\mathrm{n}+\mathrm{p}\to \mathrm{d}+\mathrm{\gamma }$

Q.

The energy required to separate the nucleons in a nucleus to infinity is called Binding Energy. This is equal to the energy released if the nucleons are brought together from infinity to form the nucleus.

1. True

2. False

Q.

If m, $m_n$ and $m_p$ are the masses of ${}_Z{X}^A$ nucleus, neutron and proton respectively, then which of the following is correct?

1. $m<(A-Z)m_n+Z{m}_p$
   

2. $m=(A-Z)m_n+Z{m}_p$
   

3. Mass defect $\Delta m$ is converted into binding energy
   

4. $m>(A-Z)m_n+Z{m}_p$
   

Q. Acceleration due to gravity is independent of the mass of the object.

1. True
2. False

Q.

The __________ determines how tightly _________ a nucleus is.

1. binding energy, bound

2. binding energy per nucleon, bound

3. binding energy, packed/bound

4. binding energy per nucleon, packed/bound

Q.

The __________ determines how tightly _________ a nucleus is.

1. Binding energy, packed/bound

2. Binding energy, bound

3. Binding energy per nucleon, packed/bound

4. Binding energy per nucleon, bound