Physics MCQ on GravitationThe following section consists of Physics Multiple Choice questions on Gravitation For competitions and exams. Select the correct option to test your skills Gravitation.
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Gravitation
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Question 1 of 20
1. Question
what Newton made the hypothesis?
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Question 2 of 20
2. Question
in 1666, Newton concluded that the force which caused an apple to fall to the ground and the force that kept the moon in its orbit around the earth is the ?
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Question 3 of 20
3. Question
Gravitational force is responsible for?
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Question 4 of 20
4. Question
The motion of falling bodies towards earth is due to the?
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Question 5 of 20
5. Question
In order to derive the law of gravitation, Newton assume that the moon’s orbit is?
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Question 6 of 20
6. Question
Newton apply Huygens’s formula to calculate?
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Question 7 of 20
7. Question
The magnitude of the weight is expressed in the units of?
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Question 8 of 20
8. Question
‘g’ decrease with?
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Question 9 of 20
9. Question
The distance from the center of earth to the center of the moon’ is called as?
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Question 10 of 20
10. Question
The weight of an object in a satellite orbiting around the earth is?
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Question 11 of 20
11. Question
If the radius of the earth were to shrink and its mass were to remain the same, the acceleration due to gravity on the surface of the earth with?
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Question 12 of 20
12. Question
The radius of earth is?
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Question 13 of 20
13. Question
At the surface of earth an object falling freely experiences an acceleration of?
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Question 14 of 20
14. Question
The acceleration of the moon is because of the?
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Question 15 of 20
15. Question
The Universal law of gravitation must apply to?
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Question 16 of 20
16. Question
The force of gravity on a body varies slightly from place to place on the earth for two reason. (i) shape of earth and (ii) ?
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Question 17 of 20
17. Question
The weight of a body in a frame of reference is equal and opposite to the force required to prevent it?
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Question 18 of 20
18. Question
“C” is a universal gravitational constant and its value is?
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Question 19 of 20
19. Question
The force exerted on body A by body B is always directed towards body B, and acts?
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Question 20 of 20
20. Question
The equation for the mass of earth is?
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Gravitation
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Question 1 of 20
1. Question
Weight of a body is a?
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Question 2 of 20
2. Question
The mass of earth is?
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Question 3 of 20
3. Question
F on A by B = —F on B by A. These two gravitational forces constitute an action-reaction pair in accordance with Newton’s?
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Question 4 of 20
4. Question
If a man goes to a height equal to the radius of the earth from its surface, his weight relative to that of earth would become?
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Question 5 of 20
5. Question
According to the Newton’s Universal law of gravitation, “Every body in the universe attracts every other body with a force which is?
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Question 6 of 20
6. Question
The value of G was first determined by?
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Question 7 of 20
7. Question
The present accepted value of the universal gravitational constant 0 = 6.673 x 1O-11 Nm2/Kg2 was obtained by?
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Question 8 of 20
8. Question
The magnitude of the gravitational force with which the earth attracts the object of mass M, towards its center, is given by?
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Question 9 of 20
9. Question
The force on the object placed near the surface is given by the mass “m” of the object multiplied by the acceleration due to gravity, which is equal to its?
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Question 10 of 20
10. Question
The weight of the body is given by?
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Question 11 of 20
11. Question
The apparent weight of a person standing in a elevator which is moving down with uniform acceleration will be?
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Question 12 of 20
12. Question
The weight of a body is not a fixed quantity. It depends upon the location as well as upon?
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Question 13 of 20
13. Question
The mass of the.body will?
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Question 14 of 20
14. Question
Astronauts experiences weightlessness when their spacecraft is?
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Question 15 of 20
15. Question
The earth’s gravitational pull is just balanced by the centripetal force resulting into?
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Question 16 of 20
16. Question
An astronaut or other body in the spacecraft is said to be weightlessness or?
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Question 17 of 20
17. Question
The earth’s gravity acts on both the spacecraft and the bodies in it, giving each?
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Question 18 of 20
18. Question
A body released inside the spacecraft does not fall relative to it, and it appears to be?
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Question 19 of 20
19. Question
If we go away from the surface of the earth a distance equal to the radius of earth the value of “g” becomes?
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Question 20 of 20
20. Question
An artificial gravity can be created in the spacecraft ?
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Gravitation
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Question 1 of 20
1. Question
The weight of a body is the gravitational force exerted on it?
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Question 2 of 20
2. Question
If a body is taken from a pole to the equator its distance from the center of the earth will?
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Question 3 of 20
3. Question
The earth is not a perfect sphere, but it bulges at the?
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Question 4 of 20
4. Question
At the center of earth dt R, value of “g”?
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Question 5 of 20
5. Question
Above the surface of the earth if we go to distance equal to double the radius of the earth, the value of ‘g’ will become?
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Question 6 of 20
6. Question
Artificial gravity is produced in a space-craft to?
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Question 7 of 20
7. Question
G is called
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Question 8 of 20
8. Question
If the radius of the Earth were increased by a factor of 4 and its mass remained the same, then the acceleration due to gravity on the Earth would
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Question 9 of 20
9. Question
If the value of gravitational acceleration at a height h above the Earth’s surface is the same as that at a depth d below the Earth’s surface (with both h and d small compared to the Earth’s radius R), then
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Question 10 of 20
10. Question
A planet is moving around the Sun in a circular orbit of circumference C. The work done on the planet by the gravitational force F of the Sun is
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Question 11 of 20
11. Question
The ratio of the time periods for two satellites of equal mass in circular orbits of radii R and 9 R is
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Question 12 of 20
12. Question
A thief stole a box with valuable article of weight ‘W’ and jumped down a wall of height h. Before he reach the ground he experienced a load o
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Question 13 of 20
13. Question
Kepler’s second law regarding constancy of arial velocity of a planet is a consequence of the law of conservation of
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Question 14 of 20
14. Question
If the gravitational force between two objects were proportional to 1/R (and not as 1/R2) where R is separation between them, then a particle in circular orbit under such a force would have its orbital speed v proportional to
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Question 15 of 20
15. Question
The period of a satellite in a circular orbit of radius R is T. The period of another satellite in circular orbit of radius 4R is
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Question 16 of 20
16. Question
A missile is launched with a velocity less than the escape velocity. The sum of its kinetic and potential energy is
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Question 17 of 20
17. Question
If the earth is 1/4th of its present distance from the sun, the duration of the year would be
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Question 18 of 20
18. Question
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
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Question 19 of 20
19. Question
The value of ‘g’ at a particular point is 9.8 m/sec2 suppose the earth suddenly shrink uniformly to half its present size without losing any mass. The value of ‘g at the same point (assuming that the distance of the point from the centre of the earth does not shrink) will become
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Question 20 of 20
20. Question
If the change in the value of g at the height h above the surface of the earth is the same as at a depth x below it, then (both x and h being much smaller than the radius of the earth)
Physics Aptitude Test on Gravitation 4
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Question 1 of 20
1. Question
A satellite is revolving around the sun in a circular orbit with uniform velocity v. If the gravitational force suddenly disappears, the velocity of the satellite will be
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Question 2 of 20
2. Question
Who among the following first gave the experimental velocity of G?
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Question 3 of 20
3. Question
The mean radius of the earth is R, its angular speed on its own axis is w and the acceleration due to gravity at earth’s surface is g. The cube of the radius of the orbit of a geo-stationary satellite will be
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Question 4 of 20
4. Question
Geo-stationary satellite
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Question 5 of 20
5. Question
If the radius of the earth were to shrink by one percent, its mass remaining the same, the acceleration due to gravity on the earth’s surface would
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Question 6 of 20
6. Question
The escape velocity from the earth’s surface is 11 km/sec. A certain planet has a radius twice that of the earth but its mean density is the same as that of the earth. The value of the escape velocity from this planet would be
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Question 7 of 20
7. Question
The escape velocity from earth is 11.2 km per sec. If a body is to be projected in a direction making an angle 45° to the vertical, then the escape velocity is
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Question 8 of 20
8. Question
What would be the duration of the year if the distance between the earth and the sun gets doubled?
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Question 9 of 20
9. Question
If escape velocity from the earth’s surface is 11.2 km/sec. then escape velocity from a planet of mass same as that of earth but radius one fourth as that of earth is
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Question 10 of 20
10. Question
A thin uniform, circular ring is rolling down an inclined plane of inclination 30° without slipping. Its linear acceleration along the inclined plane will be
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Question 11 of 20
11. Question
A artificial satellite moving in a circular orbit around the earth has a total (kinetic + potential) energy E0. Its potential energy is
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Question 12 of 20
12. Question
The distance between centre of the earth and moon is 384000 km. If the mass of the earth is 6 ´ 1024 kg and G = 6.66 ´ 10-11 Nm2/kg2. The speed of the moon is nearly
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Question 13 of 20
13. Question
When body is raised to a height equal to radius of earth, the P.E. change is
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Question 14 of 20
14. Question
A planet has twice the radius but the mean density is 1/4th as compared to earth. What is the radio of the escape velocity from the earth to that from the planet?
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Question 15 of 20
15. Question
The masses of two planets are in the ratio 1 : 2. Their radii are in the ratio 1 : 2. The acceleration due to gravity on the planets are in the ratio.
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Question 16 of 20
16. Question
If the acceleration due to gravity of a planet is half the acceleration due to gravity of earth’s surface and radius of planet is half the radius of the earth, the mass of planet in terms of mass of earth is
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Question 17 of 20
17. Question
The radii of the earth and the moon are in the ratio 10 : 1 while acceleration due to gravity on the earth’s surface and moon’s surface are in the ratio 6 : 1. The ratio of escape velocities from earth’s surface to that of moon surface is
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Question 18 of 20
18. Question
The dimensions of universal gravitational constant are
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Question 19 of 20
19. Question
Two identical solid copper spheres of radius R placed in contact with each other. The gravitational attracton between them is proportional to
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Question 20 of 20
20. Question
The centripetal force acting on a satellite orbiting round the earth and the gravitational force of earth acting on the satellite both equal F. The net force on the satellite is