2. Solved Papers
  3. BHU PMT

BHU PMT BHU PMT (Screening) Solved Paper-2010

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

    A)  12v                                       

    B)  6v

    C)  \[\frac{4}{3}v\]                               

    D)  \[\frac{3}{2}v\]

    Correct Answer: B

    Solution :

                     The velocity of satellite \[v=\sqrt{\frac{GM}{R}}\] So,          \[\frac{{{v}_{A}}}{{{v}_{B}}}=\sqrt{\frac{{{R}_{B}}}{{{R}_{A}}}}=\sqrt{\frac{R}{4R}}=\frac{1}{2}\] Here,     \[{{v}_{A}}=3v\] \[\therefore \]  \[\frac{3v}{{{v}_{B}}}=\frac{1}{2}\] Or           \[{{v}_{B}}=6v\]                


You need to login to perform this action.
You will be redirected in 3 sec spinner