Nuclear Force

Q. The strong nuclear force is:

1. Always Attractive
2. Always Repulsive
3. Attractive when nucleons are very close and vice versa
4. Repulsive when nucleons are very close and vice versa

Q. Two nucleons are at a separation of $1\times {10}^{-15}m$. 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 other is a neutron. In such a case

1. $F_2>F_1>F_3$
   
2. $F_1=F_2=F_3$
   
3. $F_1=F_2>F_3$
   
4. $F_1=F_3>F_2$

Q. At short distances nuclear force is attractive in nature.

1. True
2. False

Q. Arrange these fundamental forces in order of their magnitude, if they act between two protons separated by a distance of $1fm$
$F_G$ is Gravitational force
$F_E$ is Electromagnetic force
$F_N$ is Strong Nuclear Force

1. $F_G>F_E>F_N$
2. $F_N>F_G>F_E$
3. $F_E>F_N>F_G$
4. $F_N>F_E>F_G$

Q.

Nuclear forces are

1. Short ranged attractive and charge independent

2. Short ranged attractive and charge dependent

3. Long ranged repulsive and charge independent

4. Long ranged repulsive and charge dependent