Types Of Questions

## Gravitation

- Wondering what kind of questions that can be asked in next exam? Here you go
1
Multiple Choice Questions
The point at which the gravitational force acting on any mass is zero due to the Earth and the Moon system is (The mass of the Earth is approximately times the mass of the Moon and the distance between the Earth and the Moon is .)
A
36,000 km from the Moon.
B
38,500 km from the Moon.
C
34500 km from the Moon.
D
30,000 km from the Moon.
If the mass of the Sun were ten times smaller and the universal gravitational constant were ten times larger in magnitude, which of the following is not correct?
A
Time period of a simple pendulum on the Earth would decrease
B
Raindrops will fall faster
C
'g' on the Earth will not change
D
Walking on the ground would become more difficult
Infinite number of bodies, each of mass 2 kg are situated on x-axis at distances 1m, 2m, 4m, 8m, , respectively, from the origin. The resulting gravitational potential due to this system at the origin will be -
A
G
B
C
D
- 4 G
A metal sphere has radius and mass . A spherical hollow of diameter is made in this sphere such that its surface passes through the centre of the metal sphere and touches the outside surface of the metal sphere. A unit mass is placed at a distance from the centre of metal sphere. The gravitational field at that point is
A
B
C
D
A solid sphere of uniform density and radius applies a gravitational force of attraction equal to  on a particle placed at a distance from the centre of the sphere. A spherical cavity of radius  is now made in the sphere as shown in the figure. The sphere with the cavity now applies a gravitational force  on the same particle. The ratio  is
A
B
C
D
The radius and density of two artificial satellites are , and ,  respectively. The ratio of accelerations due to gravity on them will be:
A
B
C
D
The time period of a simple pendulum is T. When the length is increased by 10 cm, the period is .When the length is decreased by 10 cm, its periodis T. Then relation between T, T, T is
A
B
C
D
The angular velocity of the earth with which it has to rotate so that the acceleration due to gravity on latitude becomes zero is
A
B
C
D
Two particles of masses and are at a distance apart at the ends of a straight line .   is the centre of mass of the system. The magnitude of the gravitational intensity due to the masses at is
A
B
C
D
The figure shows the elliptical orbit of a planet P about the sun S. The shaded area SCD is a twice shaded area SAB. if is the the time for the planet to move from C to D and is the time to move from A to B, then
A
B
C
D