A) \[\frac{3v}{2}\]
B) \[\frac{4v}{2}\]
C) \[6v\]
D) \[12v\]
Correct Answer: C
Solution :
\[\frac{{{v}_{B}}}{{{v}_{A}}}=\sqrt{\frac{{{r}_{A}}}{{{r}_{B}}}}=\sqrt{\frac{4R}{R}}=2\] \[\therefore \] \[{{v}_{B}}=2{{v}_{A}}=2\times 3v=6v.\] Hence, the correction option is [c].You need to login to perform this action.
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