Question : Intensity of gravitational field of earth is maximum at
Option 1: Poles
Option 2: Equator
Option 3: Centre of earth
Option 4: Surface
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Correct Answer: Poles
Solution : The correct answer is poles.
The effect of gravity is not same at every place on earth. It changes with the distribution of mass. Gravity is observed more at poles and least at equator because earth is an oblate spheroid and the distance between the centre and the poles is less than the distance between poles and equator. The value of gravitational constant G was given by Sir Issac Newton and it is equal to 6.6743 × 10-11 m3 kg-1 s-2.
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Question : Gravitational force is maximum at which of the following place?
Option 1: At equator
Option 2: At tropic of cancer
Option 3: At tropic of Capricorn
Option 4: At poles
Question : The acceleration due to gravity at the equator
Option 1: is less than that at poles
Option 2: is greater than that at poles
Option 3: is equal to that at poles
Option 4: does not depends upon earth's centripetal acceleration.
Question : Select the option that expresses the given sentence in active voice.
Most of Earth's surface is covered by water.
Option 1: Water is covering most of Earth's surface.
Option 2: Water has been covering most of Earth's surface.
Option 3: Water covers most of Earth's surface.
Option 4: Water has covered most of Earth's surface.
Question : Tides are caused by the gravitational pull of the
Option 1: Earth on the Moon
Option 2: Earth on the Sun
Option 3: Sun and Moon on the Earth
Option 4: Moon on the Earth
Question : A tachometer is a device used to measure
Option 1: gravitational pull
Option 2: speed of rotation
Option 3: surface tension
Option 4: dispersive power
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