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Two satellites S(1) and S(2) revolve rou...

Two satellites `S_(1)` and `S_(2)` revolve round a planet in the same direction in circular orbits. Their periods of revolutions are 1 hour and 8 hour respectively. The radius of `S_(1)` is 104 km. The velocity of `S_(2)` with respect to `S_(1)` will be -

A

`pi xx 10^(4) "km"//"hr"`

B

`pi//3 xx 10^(4) "km"//"hr"`

C

`2pi xx 10^(4) "km"//"hr"`

D

`pi//2 xx 10^(4) "km"//"hr"`

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