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: (1) $8 : 27$ (2) $2 : 3$ (3) $3 : 2$ (4) $4 : 9$
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:\\
(1) $8 : 27$\\
(2) $2 : 3$\\
(3) $3 : 2$\\
(4) $4 : 9$