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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 isCorrectIncorrect
If the gravitational force between two objects were proportional to (and not as ) where is separation between them, then a particle in circular orbit under such a force would have its orbital speed proportional toCorrectIncorrect
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 isCorrectIncorrect
and represent gravitational and electrostatic force respectively between electrons situated at a distance is of the orderCorrectIncorrect
The value of g at a particular point is 9.8 suppose the earth suddenly shrink uniformly to half its present size without losing any mass. The value of at the same point (assuming that the distance of the point from the centre of the earth does not shrink) will becomeCorrectIncorrect
The mean radius of the earth is , its angular speed about its own axis and the acceleration due to gravity at the earth surface is . The cube of radius of orbit of ‘geostationary satellite’ will beCorrectIncorrect
The largest and the shortest distance of the earth from the sun is and . Its distance from the sun when it is at perpendicular to the major axis of the orbit drawn from the sun:CorrectIncorrect
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 beCorrectIncorrect
Gravitational acceleration on the surface of a planet is g, where g is the gravitational acceleration on the surface of the earth. The average mass density of the planet is times that of the Earth. If the escape speed on the surface of the earth is taken to be , the escape speed on the surface of the planet is will be?CorrectIncorrect
A body weighs on the earth. Find its weight on another planet whose mass is the mass of earth and radius that of the earth.CorrectIncorrect