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Question 1 of 10
1. Question
A geostationary satellite is orbiting the earth at a height of 6R above the surface of the earth, R being the radius of the earth. The time period of another satellite at a height of 2.5 R from the surface of earth is
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Question 2 of 10
2. Question
If the gravitational force between two objects were proportional to R1 (and not as R21) 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 3 of 10
3. 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 4 of 10
4. Question
Fg and Fe represent gravitational and electrostatic force respectively between electrons situated at a distance 0.1m.Fg/Fe is of the order
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Question 5 of 10
5. 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 6 of 10
6. Question
The mean radius of the earth is R, its angular speed about its own axis ω and the acceleration due to gravity at the earth surface is g. The cube of radius of orbit of ‘geostationary satellite’ will be
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Question 7 of 10
7. Question
The largest and the shortest distance of the earth from the sun is r1 and r2. Its distance from the sun when it is at perpendicular to the major axis of the orbit drawn from the sun:
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Question 8 of 10
8. Question
The density of newly discovered planet is twice that of the earth. The acceleration due to gravity at the surface of the planet is equal to that at the surface of the earth. If the radius of the earth is It the radius of the plane would be
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Question 9 of 10
9. Question
Gravitational acceleration on the surface of a planet is 116g, where g is the gravitational acceleration on the surface of the earth. The average mass density of the planet is 32 times that of the Earth. If the escape speed on the surface of the earth is taken to be 11 kms−1, the escape speed on the surface of the planet is kms−1 will be?
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Question 10 of 10
10. Question
A body weighs 160 N on the earth. Find its weight on another planet whose mass is 41th the mass of earth and radius 31rd that of the earth.
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