A nucleus has mass number $A_1$ and volume $V_1$.
Another nucleus has mass number $A_2$ and volume $V_2$. If relation between mass number is $A_2=4 A_1$, then $\frac{V_2}{V_1}=$_____.
$3$
$4$
$5$
$6$
What kind of a force does neutron-neutron ?
Which of the following is true for a sample of isotope containing ${U^{235}}$ and ${U^{238}}$
Define the different terms used for the composition of a nucleus.
Two protons exerts a nuclear force on each other, the distance between them is
Assertion : Isobars are the elements having same mass number but different atomic number.
Reason : Neutrons and protons are present inside nucleus.