The composition of an $\alpha$-particle can be expressed as:

$A$ nucleus of deuterons or deuterium is a bound atomic system best described by

$1\,U = ...... \text{kg}$. How is the mass of an atom or nucleus determined?

The order of the size of the nucleus and the Bohr radius of an atom,respectively,are:

The distance between two nucleons for which the potential energy is minimum, is (in $fm$)

Which of the following figures represents the variation of $\ln \left(\frac{R}{R_{0}}\right)$ with $\ln A$ (where $R =$ radius of a nucleus and $A =$ its mass number)?