A) \[{{m}_{A}}{{v}_{A}}<{{m}_{B}}{{v}_{B}}\]
B) \[{{m}_{A}}{{v}_{A}}>{{m}_{B}}{{v}_{B}}\]
C) \[{{m}_{A}}<{{m}_{B}}\,\,\text{and}\,\,{{v}_{A}}<{{v}_{B}}\]
D) \[{{m}_{A}}=\,{{m}_{B}}\,\text{and }{{v}_{A}}={{v}_{B}}\]
Correct Answer: B
Solution :
\[r=\frac{mv}{qB}\Rightarrow r\propto mv\] (q and B are constant) \[\because \ {{r}_{A}}>{{r}_{B}}\Rightarrow {{m}_{A}}{{v}_{A}}>{{m}_{B}}{{v}_{B}}\]
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