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

Two satellites `S_(1)` and `S_(2)` revolve around a planet in coplanar circular orbits in the same sense their periods of revolution are 1 hour and 8hours respectively the radius of the orbit of `S_(1)` is `10^(4)` km when `S_(1)` is closest to `S_(2)` the angular speed of `S_(2)` as observed by an astronaut in `S_(1)` is :

`10^(4) pi`

`2 xx 10^(4) pi`

`1/2 10^(4) pi`

`4 xx 10^(4) pi`

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