Medical Sample papers

Gravitation Problems

physics sample papers
Share with your Friends...
Share on Facebook
Facebook
Tweet about this on Twitter
Twitter
Share on LinkedIn
Linkedin
Pin on Pinterest
Pinterest
Print this page
Print

Gravitation Practice Paper

Question 1
Mass M is divided into two parts xM and (1 – x)M. For a given separation, the value of x for which the gravitational attraction between the two pieces becomes maximum is
A
1
B
1/2
C
2
D
3/5
Question 2
At what height over the earth's pole, the free fall acceleration decreases by one percent (assume the radius of earth to be 6400 km)
A
80 km
B
32 km
C
64 km
D
1.253 km
Question 3
Hubble's law states that the velocity with which milky way is moving away from the earth is proportional to
A
Mass of the milky way
B
Distance of milky way from the earth
C
Product of the mass of the milky way and its distance from the earth
D
Square of the distance of the milky way from the earth
Question 4
Gravitational mass is proportional to gravitational
A
All of these
B
Field
C
Force
D
Intensity
Question 5
A mass M is split into two parts, m and (M–m), which are then separated by a certain distance. What ratio of m/M maximizes the gravitational force between the two parts
A
1/3
B
1/5
C
1/2
D
1/4
Question 6
If the distance between the earth and the sun becomes half its present value, the number of days in a year would have been
A
182.5
B
730
C
129
D
64.5
Question 7
If there were a smaller gravitational effect, which of the following forces do you think would alter in some respect

Related: List of all Engineering Entrance Exams in India

A
Electrostatic force
B
Archimedes uplift
C
Viscous forces
D
None of these
Question 8
A body of mass m is taken from earth surface to the height h equal to radius of earth, the increase in potential energy will be

Related: BITSAT Mathematics Practice Questions

A
¼ mgR
B
2 mgR
C
½ mgR
D
mgR
Question 9
Weightlessness experienced while orbiting the earth in space-ship, is the result of
A
Zero gravity
B
Free fall towards earth
C
Inertia
D
Acceleration
Question 10
At what height from the ground will the value of ‘g’ be the same as that in 10 km deep mine below the surface of earth

Related: Diversity in Living Organisms sample paper

A
20 km
B
5 km
C
10 km
D
15 km
Question 11
A body is projected vertically upwards from the surface of a planet of radius R with a velocity equal to half the escape velocity for that planet. The maximum height attained by the body is
A
R/4
B
R/3
C
R/2
D
R/5
Question 12
A satellite is launched into a circular orbit of radius R around the earth. A second satellite is launched into an orbit of radius (1.01)R. The period of the second satellite is larger than that of the first one by approximately
A
1.5%
B
1.0%
C
0.5%
D
3.0%
Question 13
Earth is revolving around the sun if the distance of the Earth from the Sun is reduced to 1/4th of the present distance then the present day length reduced by
A
1/6
B
1/4
C
1/2
D
1/8
Question 14
The radius and mass of earth are increased by 0.5%. Which of the following statements are true at the surface of the earth
A
Potential energy will remain unchanged
B
Escape velocity will remain unchanged
C
g will increase
D
g will decrease
Question 15
If the radius of the earth were to shrink by 1% its mass remaining the same, the acceleration due to gravity on the earth's surface would
A
Remain unchanged
B
Decrease by 2%
C
Increase by 1%
D
Increase by 2%
Question 16
If the earth stops rotating, the value of ‘g’ at the equator will
A
Remain same
B
None of these
C
Increase
D
Decrease
Question 17
A satellite S is moving in an elliptical orbit around the earth. The mass of the satellite is very small compared to the mass of earth
A
The total mechanical energy of S varies periodically with time
B
The angular momentum of S about the centre of the earth changes in direction but its magnitude remains constant
C
The acceleration of S is always directed towards the centre of the earth
D
The linear momentum of S remains constant in magnitude
Question 18
A rocket is launched with velocity 10 km/s. If radius of earth is R, then maximum height attained by it will be
A
3R
B
5R
C
4R
D
2R
Question 19
A spring balance is graduated on sea level. If a body is weighed with this balance at consecutively increasing heights from earth's surface, the weight indicated by the balance
A
Will go on increasing continuously
B
Will go on decreasing continuously
C
Will first increase and then decrease
D
Will remain same
Question 20
A geostationary satellite orbits around the earth in a circular orbit of radius 36000 km. Then, the time period of a satellite orbiting a few hundred kilometres above the earth’s surface (REarth = 6400 km) will approximately be
A
1 h
B
1/2 h
C
2 h
D
4 h
There are 20 questions to complete.
Share with your Friends...
Share on Facebook
Facebook
Tweet about this on Twitter
Twitter
Share on LinkedIn
Linkedin
Pin on Pinterest
Pinterest
Print this page
Print

About the author

Vishal Arora

Leave a Comment