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Q 01 / 25
Gravitation is the force of attraction between any two objects in the universe.
Q 02 / 25
Newton’s law of gravitation states that gravitational force is proportional to the square of the distance.
Q 03 / 25
The acceleration due to gravity is different for all objects on Earth.
Q 04 / 25
Weight is the force with which Earth attracts a body.
Q 05 / 25
Mass and weight are the same physical quantities.
Q 06 / 25
The value of acceleration due to gravity \(g\) is approximately \(9.8\, m/s^2\) on Earth.
Q 07 / 25
Buoyancy is a force acting downward on an object immersed in a fluid.
Q 08 / 25
According to Archimedes’ principle, buoyant force equals the weight of fluid displaced.
Q 09 / 25
A stone will float in water if its weight is less than the buoyant force.
Q 10 / 25
The gravitational force between two objects becomes four times if the distance between them doubles.
Q 11 / 25
The universal gravitational constant \(G\) has the unit \(Nm^2/kg^2\).
Q 12 / 25
The weight of an object is maximum at the equator.
Q 13 / 25
The gravitational force depends only on the distance between the objects.
Q 14 / 25
Free fall occurs when an object falls under the influence of only gravity without air resistance.
Q 15 / 25
Satellites orbit Earth due to gravitational force acting as centripetal force.
Q 16 / 25
The gravitational accelerationgggat the center of Earth is zero.
Q 17 / 25
Mass of an object changes when taken to Moon.
Q 18 / 25
Weight of an object decreases on the Moon compared to Earth.
Q 19 / 25
Pressure is force divided by volume.
Q 20 / 25
Fluid pressure increases with depth due to weight of fluid above.
Q 21 / 25
Thrust is the total force acting on a surface perpendicular to it.
Q 22 / 25
Pressure and thrust are the same physical quantities.
Q 23 / 25
Gravity only acts on objects moving on Earth’s surface.
Q 24 / 25
The Moon’s gravity causes ocean tides on Earth.
Q 25 / 25
Archimedes’ principle is valid only for liquids, not gases.
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