The time period of a geostationary satel...

The time period of a geostationary satellite is 24 h, at a height `6R_E`(`R_E` is radius of earth) from surface of earth. The time period of another satellite whose height is `2.5 R_E` from surface will

`12/sqrt2 h`

`6 sqrt2 h`

`12 sqrt2 h`

`24/2.5 h`

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