# Gravitation MCQ

## Get Started with “Gravitation“ MCQs:

##### 1. 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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##### 2. 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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##### 3. Question

The period of geostationary artificial satellite is

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##### 4. Question

When the planet comes nearer the sun moves

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##### 5. 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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##### 6. Question

The period of geostationary artificial satellite of earth is

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##### 7. 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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##### 8. Question

There is no atmosphere on the moon because

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##### 9. Question

Kepler’s second law regarding constancy of arial velocity of a planet is a consequence of the law of conservation

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##### 10. Question

The escape velocity of projection from the earth is approximately (R = 6400 km)

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##### 11. 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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##### 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 of

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##### 13. Question

What would be the duration of the year if the distance between the earth and the sun gets doubled?

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##### 14. Question

When body is raised to a height equal to radius of earth, the P.E. change is

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##### 15. Question

Geo-stationary satellite

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##### 16. Question

The radii of the earth and the moon are in the ratio 10 : 1 while acceleration due to gravity on th eearth’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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##### 17. Question

Who among the following first gave the experimental velocity of G?

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##### 18. 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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##### 19. Question

If g is the acceleration due to gravity of the earth’s surface the gain in the potential energy of an object of mass m raised from the surface of the earth to a height equal to the radius R of the earth is

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##### 20. Question

A thin uniform, circular ring is rolling down an inclined plane of inclination 30 degree  without slipping.Its linear acceleration along the inclined plane will be

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##### 21. 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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##### 22. 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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##### 23. 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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##### 24. 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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##### 25. 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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