1
###
Which statements about gravitational force is not correct

Which one of the following statements about gravitational force is not correct?

- It is experienced by all bodies in the universe
- It is a dominant force between celestial bodies
- It is a negligible force for atoms
- It is same for all pairs of bodies in our universe

2
###
Planet A has double the radius than that of planet B

Planet A has double the radius than that of planet B. If the mass of planet A is 4 times heavier than the mass of planet B, which of the following statements regarding weight of an object is correct?

- Heavier on Planet B than on Planet A
- Same on both the Planets
- Cannot be measured on Planet B
- Heavier on Planet A than on Planet B

3
###
An object weighs 10 N in air. When immersed fully in water, it weighs only 8 N

An object weighs 10 N in air. When immersed fully in water, it weighs only 8 N. The weight of the liquid displaced by the object will be

- 2 N
- 8 N
- 10 N
- 12 N

4
###
The weight of an object at the centre of the earth of radius R is

The weight of an object at the centre of the earth of radius R is

- zero
- infinite
- R times the weight at the surface of the earth
- 1/R
^{2}times the weight at surface of the earth

5
###
The value of quantity G in the law of gravitation

The value of quantity G in the law of gravitation

- depends on mass of earth only
- depends on radius of earth only
- depends on both mass and radius of earth
- is independent of mass and radius of the earth

6
###
Law of gravitation gives the gravitational force between

Law of gravitation gives the gravitational force between

- the earth and a point mass only
- the earth and Sun only
- any two bodies having some mass
- two charged bodies only

7
###
The gravitational force between two objects is F

The gravitational force between two objects is F. If masses of both objects are halved without changing distance between them, then the gravitational force would become

- F/4
- F/2
- F
- 2F

8
###
The value of acceleration due to gravity

The value of acceleration due to gravity

- is same on equator and poles
- is least on poles
- is least on equator
- increases from pole to equator

9
###
Two objects of different masses falling freely

Two objects of different masses falling freely near the surface of moon would

- have same velocities at any instant
- have different accelerations
- experience forces of same magnitude
- undergo a change in their inertia

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