question_answer

A nucleus at rest breaks into two nuclear parts which have their velocities ratio equal to 2 : 1. What will be die ratio of their radii of the nuclei ?

A) \[{{2}^{1/3}}:1\]              

B)                       \[1:{{2}^{1/3}}\]                              

C) \[{{2}^{3/2}}:1\]                              

D)       \[1:{{2}^{3/2}}\]