A) \[\frac{2\,v}{A-4}\]
B) \[\frac{2\,v}{A+4}\]
C) \[\frac{4\,v}{A-4}\]
D) \[\frac{4\,v}{A+4}\]
Correct Answer: C
Solution :
The initial momentum of the nucleus would be equal to \[4{{u}_{H}}v\]. Where an is unit mass of hydrogen. Since the mass of hydrogen is 1. So the initial momentum can be given by 4v. \[{{\operatorname{P}}_{i}}={{P}_{t}}\] \[\Rightarrow \,\,\,\,\,\,4v=\left( A-4 \right)V\] \[\Rightarrow \,\,\,\,\,\,\,\,\,\,\,V=\frac{4v}{A-4}\]
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