Gravitation multiple choice questions NEET Physics

Some multiple choice questions in self practice tests. Answers and solutions are also given for them. Gravitation Physics NEET.

They are based on NEET syllabus 10 + 2. Each self practice test has ten questions only.

You should study the textbook lesson Gravitation in NCERT or other textbooks.

You must be answer the MCQs in your own method first. The multiple choice questions were given in previous years different compitative exams.

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NEET Gravitation multiple choice questions

Physics

Gravitation

Multiple choice questions

Self Practice test 1

1) A body weighs 200 N on the surface of the Earth. How much will it weigh half way down to the centre of the earth ?

1. 150 N

2. 200 N

3. 250 N

4. 100 N

2) A particle is thrown with escape velocity ve from the surface of earth. Calculate its velocity at height 3R :

1. = 9.25 km/s

2. = 5.6 km/s

3. = 11.2 km/s

4. = 4.3 km/s

3) The minimum energy required to launch a satellite of mass m from the surface of earth of mass M and radius R in a circular orbit at an altitude of 2R from the surface of the earth is :

4) The height at which the weight of the body becomes 1/16 th , its weight on the surface of the earth ( radius R) is :

1. 15 R

2. 4R

3. 5R

4. 3 R

5) A spherical planet has a mass Mp and diameter Dp. A particle of mass m filing freely near the surface of this planet will experience an acceleration due to gravity, equal to :

6) The escape velocity for earth is v . A planet having 9 times the mass of earth and a radius 16 times that of earth, the escape velocity of planet is :

1. v/3

2. 3v/4

3. 9v/4

4. 2v/3

7) The radii of a circular orbit of two satellites A and B of the earth, are 4R and R, respectively, If the speed of satellite A is 3V, then the speed of satellite B will be :

1. 3V/2

2. 3V/4

3. 12V

4. 6V

8) Two satellites of earth S1 and S2 are moving in the same orbit. The mass of S1 is four times the mass of S2. Which one of the following statements is true ?

1. The kinetic energies of the two satellites are equal

2. The time period of S1 is 4 times that of S2

3. The potential energies of earth and satellite in the two cases are equal

4. S1 and S2 are moving with the same speed.

9) Escape velocity for a projectile at earth’s surface Ve. A body is projected from earth’s surface with velocity 2Ve. The velocity of the body when it is at infinity distance from the centre of the earth is :

10) A body attains a height equal to the radius of the earth when projected from earth’s surface. The velocity of the body with which it was projected is :

Answers for self practice test 1

1) 4

2) 2

3) 2

4) 4

5) 2

6) 2

7) 4

8) 4

9) 3

10) 2

Solutions for self practice test 1

NEET Gravitation Practice tests

Self Practice test 2

1) A block hole is an object whose gravitational field is so strong that even light cannot escape from it. To what approximate radius would earth (mass = 5.98 × 10 ^ 24 kg) have to be compressed to be a black hole in meters ?

2) If Ve a is escape velocity and Vo is orbital velocity of a satellite for orbit close to the earth’s surface, then these are related by :

3) A geostationary satellite is orbiting the earth at a height of 5R above that surface of the earth, R being the radius of the earth. The time period of another satellite in hours at a height of 2R from the surface of the earth is :

1. 10

2. 6/√2

3. 5

4. 6√2

4) The additional kinetic energy to be provided to a satellite of mass m revolving around a planet of mass M, to transfer it from a circular arbit of radius R1 to another of radius R2 (R2 is greater than R1) is :

5) A particle of mass M is situated at the centre of a spherical shell of same mass and radius a. The gravitational potential at a point situated at a/2 distance from the centre, will be :

6) A satellite is orbiting just above the surface of the earth with period T. If d is the density of the earth and G is the universal constant of gravitation, equantity 3π\ Gd represents

7) For a satellite moving in an arbit around the earth, the ratio of kinetic energy to potential energy is :

1. 2

2. 1/√2

3. – 1/2

4. √2

8) Imagine a new planet having the same density as that of earth but it is 3 times bigger than the earth in size. If the acceleration due to gravity on the surface of the earth is g and that on the surface of the new planet is g’ then :

1. g’ = g/9

2. g’ = 9g

3. g’ =3g

4. g’ = 27 g

9) The work done to raise a mass m from the surface of the earth to a height h, which is equal to the radius of the earth is :

1. mgR

2. 2mgR

3. 1/2 mgR

4. 3/4 mgR

10) A planet moving along an elliptical arbit is closest to the sun at a distance r1 and farthest away at a distance of r2. If v1 and v2 are the linear velocities at these points respectively, then the ratio v1/ v2 is :