$1 a.m.u.$ is equivalent to
$1.6 \times {10^{ - 12}}Joule$
$1.6 \times {10^{ - 19}}Joule$
$1.5\, \times {10^{ - 10}}Joule$
$1.5 \times {10^{ - 19}}Joule$
Which of the following particle has similar mass to electron
Given the mass of iron nucleus as $55.85\,u$ and $A=56$, find the nuclear density?
The nuclear radius is given by $R=r_0 A^{1 / 3}$, where $r_0$ is constant and $A$ is the atomic mass number. Then, the nuclear mass density of $U^{238}$ is
An unstable heavy nucleus at rest breaks into two nuclei which move away with velocities in the ratio of $8:27$. The ratio of the radii of the nuclei (assumed to be spherical ) is
Write and explain the Einstein theory of special relativity.