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NEET Sample Paper NEET Sample Test Paper-17

  • question_answer
    Two satellites A and B go round a planet in circular orbits having radii 4R and R, respectively. If the speed of satellite A is 3v, then the speed of satellite B is

    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].


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