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Class 11 Physics
Gravitation Chapter 8
Quiz 1
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India's first artificial satellite was:
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Sputnik
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Rohini
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Insat
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Aryabhatta
According to Kepler's Third Law:
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A
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B
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C
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D
Weightlessness is:
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a situation in which the effective weight of the body becomes zero.
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a situation in which the effective weight of the body becomes 10N.
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a situation in which the effective weight of the body becomes 9.8N.
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a situation in which the effective mass of the body becomes zero.
Different planets have different escape velocities because:
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different planets have different atmosphere
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they have different distances from sun
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escape velocity depends on the body that has to escape the atmosphere of the planet
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they have different masses and sizes
Kepler's second law states that the straight line joining the planet to the sun sweeps out equal areas in equal time. The statement is equivalent to saying that:
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longitudnal acceleration is zero
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total acceleration is zero
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transverse acceleration is zero
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radial acceleration is zero
A satellite which appears to be at a fixed position at a definite height to an observer is called:
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Geostationary satellite and geosynchronous satellite
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Polar satellite
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Geostationary satellite
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Geosynchronous satellite
The squares of the periods of revolution of the planets are proportional to the ___________of their semimajor axis of its orbit.
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squares
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square root
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cube root
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cubes
Which is untrue about orbital velocity?
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increases with the decrease in height of satellite
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depends on mass and radius of planet around which it revolves
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decreases with an increase in radius of orbit
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it is independent of mass of satellite
A satellite moves in a circular orbit around earth. The radius of this orbit is one half that of moon's orbit. The satellite completes one revolution in:
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(2) 3/2 lunar month
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(2) 3 lunar month
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(2) 2/3 lunar month
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(2)1/2 lunar month
Kepler's law of areas can be understood as a consequence of:
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conservation of angular momentum
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conservation of mass
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conservation of energy
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conservation of linear momentum
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