Binding Energy

Q.

Fission of nuclei is possible because the binding energy per nucleon in them:

1. Decreases with mass number at high mass numbers

2. Increases with mass number at high mass numbers

3. Decreases with mass number at low mass numbers

4. Increases with mass number at low mass numbers

Q.

What physical quantity does the electron volt (eV) measure? How is it related to the S.I. unit of that quantity ?

Q. is the minimum energy required to split the nucleus of an atom into its component parts.

1. Binding energy
2. Overall energy
3. Atomic energy

Q.

What is the binding energy of the hydrogen nucleus?

Q.

The minimum energy required to disassemble a system of particles into separated parts is called Binding energy.

1. True

2. False

Q.

Match the following for a pair of protons:
1. Electrostatic Force I. Attractive
2. Strong Nuclear Force II. Repulsive

1. 1-I, 2-II

2. 1-I, 2-I
3. 1-II, 2-II

4. 1-II, 2-I

Q. 1 electron volt per second is equal to:

[1 mark]

1. $1.6\times {10}^{-19}kW$
2. $1.6\times {10}^{-13}W$
3. $1.6\times {10}^{-16}W$
4. $1.6\times {10}^{-22}kW$

Q. Two nuclei: A and B have very similar binding energy per nucleon. This means that on breaking into smaller nuclei:

1. Both will release energy
2. Both will absorb energy
3. They will release or absorb energy based on their atomic number (or number of nucleons)
4. How am I to predict this, am I supposed to be an astrologer?

Q.

If two protons and two neutrons are brought extremely close together to form a single, bound particle, the energy released in the process will be equal to ____

1. The blinding energy of helium nucleus
2. There will be no energy released
3. There might or might not be any energy released
4. The mass-energy of an alpha particle.

Q.

Which of the following is a wrong description of the binding energy of a nucleus?

1. It is the energy made available when free nucleons combine to form a nucleus.
2. It is the sum of the rest mass energies of its nucleons minus the rest mass energy of the nucleus.
3. It is the sum of the Kinetic energy of all the nucleons in the nucleus. Z
4. It is the energy required to break a nucleus into its constituent nucleons.

Q.

If M is the mass of a nucleus and A its atomic mass, then the packing fraction is

1. $\frac{M-A}{M+A}$

2. $\frac{M-A}{M}$

3. $\frac{M-A}{A}$

4. $\frac{M+A}{M-A}$

Q.

If two atoms A and B of a molecule are brought closer than their minimum inter-nuclear distance, then potential energy of the system

1. remains constant at minimum value

2. starts increasing

3. remains constant at maximum value

4. starts decreasing

Q.

Which of the following is a wrong description of binding energy of a nucleus?

1. It is the energy made available when free nucleons combine to form a nucleus.

2. It is the sum of the kinetic energy of all the nucleons in the nucleus.

3. It is the sum of the rest mass energies of its nucleons minus the rest mass energy of the nucleus.

4. It is the energy required to break a nucleus into its constituent nucleons.

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. Binding energy per nucleon of ${}_1{H}^2$ and ${}_{2}H{e}^4$ are $1.1MeV$ and $7.0MeV$, respectively. Energy released in the process ${}_1{H}^2{+}_1{H}^2{⟶}_{2}H{e}^4$ is

1. $20.8MeV$
2. $16.6MeV$
3. $25.2MeV$
4. $23.6MeV$

Q. The binding energy per nucleon of $O^{16}$ is 7.97 MeV and that of $O^{17}$ is 7.75 MeV. 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.

The binding energy of deuteron ${(}_1^{2}H)$ is 1.15 MeV per nucleon and an alpha particle ${(}_2^{4}He)$ has a binding energy of 7.1 MeV per nucleon. Then in the reaction
${}_1^{2}H{+}_1^{2}H{\to }_2^{4}He+Q$
the energy Q released is

1. 1 MeV

2. 11.9 MeV

3. 23. MeV

4. 931 MeV

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

1. 3.52
2. 3.64
3. 4.23
4. 7.86

Q. A nucleus of mass $M+△m$ is at rest and decays into two daughter nuclei of equal mass $\frac{M}{2}$ each. Speed of light is $c$.
The speed of daughter nuclei is
[AIEEE-2010]

1. $c\frac{△m}{M+△m}$
2. $c\sqrt{\frac{2△m}{M}}$
3. $c\sqrt{\frac{△m}{M}}$
4. $c\sqrt{\frac{△m}{M}}$

Q. A nucleus of mass $\text{M}+\Delta \text{m}$ is at rest and it decays into two daughter nuclei of equal mass $\frac{\text{M}}{2}$ each. The speed of the light is $\text{c}$. What is the speed of the daughter nuclei?

1. $\text{c}\sqrt{\frac{2\Delta \text{m}}{\text{M}}}$
2. $\text{c}\sqrt{\frac{\Delta \text{m}}{\text{M}}}$
3. $\text{c}\sqrt{\frac{\text{M}}{\Delta \text{m}}}$
4. $\frac{\text{c}\Delta \text{m}}{\text{M}+\Delta \text{m}}$

Q. It is easier to remove a nucleon from nucleus X than nucleus Y. X has _____________ binding energy per nucleon than Y?

1. Lower

2. Higher

Q. The masses of neutron and proton are $1.0087$amu. and $1.0073$ amu. respectively. If the neutrons and protons combine to form a helium nucleus (alpha particles) of mass $4.0015$ amu. the binding energy for the helium nucleus will be ($1$ a.m.u = $931$ MeV)

1. $28.4$ MeV
2. $20.8$ MeV
3. $27.3$ MeV
4. $14.2$ MeV

Q. The binding energy per nucleon for ${}_1^{2}H$ and ${}_2^{4}He$ respectively are $1.1$ MeV and $7.1$ MeV. The energy released in MeV when two ${}_1^{2}H$ nuclei fuse to form ${}_2^{4}He$ is

1. $8.2$
2. $28.4$
3. $24$
4. $4.4$

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. 4.23

4. 7.86

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

1. 3.52
2. 3.64
3. 4.23
4. 7.86

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.

The __________ determines how tightly _________ a nucleus is.

1. binding energy per nucleon, bounded

2. binding energy, packed/bounded

3. binding energy per nucleon, packed/bounded

4. binding energy, bounded