1.

The escape velocity for a planet is upsilon_e . A particle is projected from its surface with a speed upsilon .For this particle to move as a satellite around the planet

Answer»

`upsilon_e/2 LT UPSILON lt upsilon_e`
`upsilon_e/sqrt2 lt upsilon lt upsilon_e`
`upsilon_e lt upsilon lt sqrt2upsilon_e`
`upsilon_e/sqrt2 lt upsilon lt upsilon_e/2`

ANSWER :B


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