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PHXII13:NUCLEI

363800 Nuclear forces are

1 Non-central forces

2 Saturated

3 Spin dependent

4 All the above

PHXII13:NUCLEI

363801 Two nucleons are at a separation of $1 f m$ . The net force between them is $F_{1},$ if both are neutrons, $F_{2}$ if both are protons and $F_{3}$ if one is a proton and the other is a neutron.

1

F_{2} > F_{1} > F_{3}

2

F_{1} > F_{2} > F_{3}

3

F_{1} = F_{2} > F_{3}

4

F_{1} = F_{3} > F_{2}

Explanation:

Nuclear force of attraction between any two nucleons $(n - n, p - p, p - n)$ is same. The difference comes up only due to electrostatic force of repulsion between two protons.
$∴ F_{1} = F_{3} \neq F_{2}$
Coulombic repulsion takes place between $p - p$
$∴ F_{1} = F_{3} > F_{2}$

PHXII13:NUCLEI

363802 Assertion :
The nuclear force becomes weak if the nucleus contains too many protons compared to neutrons.
Reason :
The electrostatic forces weaken the nuclear force.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but reason is correct.

Explanation:

$F_{e l e c t r o} ≃ (F_{n u c l e a r} / 100)$
Nuclear forces are strongest when protons equal neutrons. Imbalance weakens nuclear force. Weakening isn't due to electrostatic force. So correct option is (3).

PHXII13:NUCLEI

363803 The strong interaction exists in

1 Gravitational forces

2 Electrostatic force of attraction

3 Nuclear forces

4 Magnetic force on a moving charge

PHXII13:NUCLEI

363800 Nuclear forces are

1 Non-central forces

2 Saturated

3 Spin dependent

4 All the above

PHXII13:NUCLEI

363801 Two nucleons are at a separation of $1 f m$ . The net force between them is $F_{1},$ if both are neutrons, $F_{2}$ if both are protons and $F_{3}$ if one is a proton and the other is a neutron.

1

F_{2} > F_{1} > F_{3}

2

F_{1} > F_{2} > F_{3}

3

F_{1} = F_{2} > F_{3}

4

F_{1} = F_{3} > F_{2}

Explanation:

Nuclear force of attraction between any two nucleons $(n - n, p - p, p - n)$ is same. The difference comes up only due to electrostatic force of repulsion between two protons.
$∴ F_{1} = F_{3} \neq F_{2}$
Coulombic repulsion takes place between $p - p$
$∴ F_{1} = F_{3} > F_{2}$

PHXII13:NUCLEI

363802 Assertion :
The nuclear force becomes weak if the nucleus contains too many protons compared to neutrons.
Reason :
The electrostatic forces weaken the nuclear force.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but reason is correct.

Explanation:

$F_{e l e c t r o} ≃ (F_{n u c l e a r} / 100)$
Nuclear forces are strongest when protons equal neutrons. Imbalance weakens nuclear force. Weakening isn't due to electrostatic force. So correct option is (3).

PHXII13:NUCLEI

363803 The strong interaction exists in

1 Gravitational forces

2 Electrostatic force of attraction

3 Nuclear forces

4 Magnetic force on a moving charge

PHXII13:NUCLEI

363800 Nuclear forces are

1 Non-central forces

2 Saturated

3 Spin dependent

4 All the above

PHXII13:NUCLEI

363801 Two nucleons are at a separation of $1 f m$ . The net force between them is $F_{1},$ if both are neutrons, $F_{2}$ if both are protons and $F_{3}$ if one is a proton and the other is a neutron.

1

F_{2} > F_{1} > F_{3}

2

F_{1} > F_{2} > F_{3}

3

F_{1} = F_{2} > F_{3}

4

F_{1} = F_{3} > F_{2}

Explanation:

Nuclear force of attraction between any two nucleons $(n - n, p - p, p - n)$ is same. The difference comes up only due to electrostatic force of repulsion between two protons.
$∴ F_{1} = F_{3} \neq F_{2}$
Coulombic repulsion takes place between $p - p$
$∴ F_{1} = F_{3} > F_{2}$

PHXII13:NUCLEI

363802 Assertion :
The nuclear force becomes weak if the nucleus contains too many protons compared to neutrons.
Reason :
The electrostatic forces weaken the nuclear force.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but reason is correct.

Explanation:

$F_{e l e c t r o} ≃ (F_{n u c l e a r} / 100)$
Nuclear forces are strongest when protons equal neutrons. Imbalance weakens nuclear force. Weakening isn't due to electrostatic force. So correct option is (3).

PHXII13:NUCLEI

363803 The strong interaction exists in

1 Gravitational forces

2 Electrostatic force of attraction

3 Nuclear forces

4 Magnetic force on a moving charge

PHXII13:NUCLEI

363800 Nuclear forces are

1 Non-central forces

2 Saturated

3 Spin dependent

4 All the above

PHXII13:NUCLEI

363801 Two nucleons are at a separation of $1 f m$ . The net force between them is $F_{1},$ if both are neutrons, $F_{2}$ if both are protons and $F_{3}$ if one is a proton and the other is a neutron.

1

F_{2} > F_{1} > F_{3}

2

F_{1} > F_{2} > F_{3}

3

F_{1} = F_{2} > F_{3}

4

F_{1} = F_{3} > F_{2}

Explanation:

Nuclear force of attraction between any two nucleons $(n - n, p - p, p - n)$ is same. The difference comes up only due to electrostatic force of repulsion between two protons.
$∴ F_{1} = F_{3} \neq F_{2}$
Coulombic repulsion takes place between $p - p$
$∴ F_{1} = F_{3} > F_{2}$

PHXII13:NUCLEI

363802 Assertion :
The nuclear force becomes weak if the nucleus contains too many protons compared to neutrons.
Reason :
The electrostatic forces weaken the nuclear force.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but reason is correct.

Explanation:

$F_{e l e c t r o} ≃ (F_{n u c l e a r} / 100)$
Nuclear forces are strongest when protons equal neutrons. Imbalance weakens nuclear force. Weakening isn't due to electrostatic force. So correct option is (3).

PHXII13:NUCLEI

363803 The strong interaction exists in

1 Gravitational forces

2 Electrostatic force of attraction

3 Nuclear forces

4 Magnetic force on a moving charge

Explanation:

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