The minimum speed with whicih a body must be thrown to reach a height R/4 above the surface of the earth is (Rto Radius of the earth )

The minimum speed with whicih a body must be thrown to reach a height

1.	The minimum speed with whicih a body must be thrown to reach a height R/4 above the surface of the earth is (Rto Radius of the earth )
Answer» `SQRT((GR)/(2))` `sqrt(gR)` `sqrt((2gR)/(5))` `sqrt((gR)/(5))` Answer :C