A) \[\frac{{{m}_{0}}{{v}_{0}}}{{{q}_{0}}{{E}_{0}}}\]
B) \[2\frac{{{m}_{0}}{{v}_{0}}}{{{q}_{0}}{{E}_{0}}}\]
C) \[\sqrt{3}\frac{{{m}_{0}}{{v}_{0}}}{{{q}_{0}}{{E}_{0}}}\]
D) \[3\frac{{{m}_{0}}{{v}_{0}}}{{{q}_{0}}{{E}_{0}}}\]
Correct Answer: C
Solution :
\[{{v}_{i}}={{v}_{0}}\] and \[{{v}_{f}}=\sqrt{v_{0}^{2}+{{\left( \frac{qE}{m}t \right)}^{2}}}\]and \[{{v}_{f}}=2{{v}_{i}}\,\,\,\,\Rightarrow \,\,\,\,t=\sqrt{3}\,\frac{{{m}_{0}}{{v}_{0}}}{{{q}_{0}}{{E}_{0}}}\]You need to login to perform this action.
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