1.A body is projected vertically from the surface of the Earth with a velocity equal to half of the escape velocity. Maximum height reached by the body is

2.The radius of Earth is h. If the acceleration due to gravity reduces to 1% of its value at the surface of Earth, then the altitude is

3.A satellite is orbiting very close to a planet. Its time period depends only upon

4.If both the mass and radius of Earth decrease by 1%, the value of acceleration due to gravity will decrease by nearly

5.A body weighs 700 g on the surface of the Earth. How much will it weigh on the surface of a planet whose mass is 1 / 7 and radius is half that of the Earth ?