The fixed path in which the satellite moves round the planet is called
Circle
Orbit
Shell
radius
The weight of a body on the moon is one - sixth of its weight on the earth.How will the mass of the body vary ?
Becomes 1/6 th
Remains the same
Becomes 6 times
Becomes 1/8 th
The mass of a body is measured to be 12 kg on The Earth. If it is taken to moon, the mass will be
72 kg
2 kg
12 kg
24 kg
If the distance between two objects is halved ,then the gravitational force of attraction is
Doubled
Halved
4 times
Becomes(1/4)th
If height from the ground increases, the value of g ?
Increases
Decreases
Doubles
No change
Every object has a point where all its weight is considered to be concentrated, this point is called
Acceleration due to gravity
Midpoint
Gravitational force
Centre of gravity
The minimum velocity that an object should possess to escape from the gravitational field of earth is called
Orbital velocity
Escape velocity
Uniform velocity
Retardation
Name the fundamental force which holds the planets in their orbits around the sun:
Gravitational force of attraction
Electrostatic force of attraction
Nuclear force of attraction
None of these
Satellites whose period of revolution is 24 hours are called
Geostationary satellites
Polar satellite
Equatorial satellite
Artificial satellite