Atoms And Nuclei Question 254
Question: A nucleus of $ _{84}^{210}Po $ originally at rest emits a particle with speed v. What will be the recoil speed of the daughter nucleus [DCE 2002]
Options:
A) 4v/206
B) 4v/214
C) v/206
D) v/214
Show Answer
Answer:
Correct Answer: A
Solution:
$ _{84}Po^{210}\to _{82}X^{206}+ _{2}He^{4} $ Using conservation of linear moments $ 206,{v}’+4v=0\Rightarrow {v}’=-\frac{4v}{(206)} $
$ \Rightarrow ,|{v}’|,=\frac{4v}{206} $
