A) \[12\,\upsilon \]
B) \[6\,\upsilon \]
C) \[\frac{4}{3}\upsilon \]
D) \[\frac{3}{2}\upsilon \]
Correct Answer: D
Solution :
Orbital velocity \[\upsilon \propto \sqrt{R}\] \[\Rightarrow \] \[\begin{align} & \frac{\upsilon A}{\upsilon B}=\sqrt{\frac{{{R}_{A}}}{{{R}_{B}}}} \\ & \frac{{{3}_{\upsilon }}}{{{\upsilon }_{B}}}\sqrt{\frac{4R}{R}} \\ & {{\upsilon }_{B}}=\frac{3}{2}\upsilon \\ \end{align}\]
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