Escape velocity for earth surface is 11 km/s. If the radius of any planet is two times the radius of the earth but average density is same that of earth, then the escape velocity at the planet will be ........

Escape velocity for earth surface is 11 km/s. If the radius of any pla

1.	Escape velocity for earth surface is 11 km/s. If the radius of any planet is two times the radius of the earth but average density is same that of earth, then the escape velocity at the planet will be ........
Answer» 22 km/s 11km/s 5.5 km/s 15.5 km/s Solution :`implies v_e=SQRT((2GM)/R) =R sqrt(8/3piGrho)` `v_e PROP R ` (If `RHO ` is CONSTANT )