A) \[R\sqrt{2}\]
B) \[R\sqrt{3}\]
C) 2 R
D) 3 R
Correct Answer: A
Solution :
\[r=\frac{\sqrt{2mK}}{qB}\Rightarrow r\propto \sqrt{K}\] \[\Rightarrow \frac{R}{{{R}_{2}}}=\sqrt{\frac{K}{2K}}\Rightarrow {{R}_{2}}=R\sqrt{2}\]
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