Free Gravitation MCQs with Answers
245 Gravitation MCQs from Physics, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
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245 questions · page 13 of 25
121. The minimum velocity of projection to go out from the earth's gravitational pull is called:
- A. Terminal velocity
- B. Escape velocity
- C. Angular velocity
- D. Orbital velocity
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Correct answer: Escape velocity122. Newton's law of gravitation applies to:
- A. Small bodies only
- B. Planets only
- C. Both small and big bodies
- D. Only valid for solar system
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Correct answer: Both small and big bodies123. The weight of a man is equal to the force of gravity acting on it when:
- A. The elevator is at rest
- B. The elevator moves up with an acceleration 'a'
- C. The elevator moves down with an acceleration 'a'
- D. None of these
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Correct answer: The elevator is at rest124. Inertial mass is:
- A. Equal to gravitational mass
- B. Less than gravitational mass
- C. More than gravitational mass
- D. Not related to gravitational mass at ordinary speed
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Correct answer: Equal to gravitational mass125. The acceleration due to gravity on a planet with mass and radius half that of earth will be:
- A. g
- B. 2g
- C. g/2
- D. g/4
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Correct answer: g/2126. If the distance between two masses is doubled and their masses are also doubled, the gravitational force:
- A. Becomes five times
- B. Becomes half
- C. Becomes doubled
- D. Remains unchanged
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Correct answer: Remains unchanged127. The gravitational force with which earth attracts the moon:
- A. Is smaller than the force with which moon attracts the earth
- B. Is greater than the force with which moon attracts the earth
- C. Is equal to the force with which moon attracts the earth
- D. The fact is yet to be established
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Correct answer: Is equal to the force with which moon attracts the earth128. A body is taken from the earth's surface to the moon, the weight of the body will be zero at a point where force of attraction due to:
- A. The earth is zero
- B. The moon is zero
- C. The moon and earth is equal and opposite
- D. Both the moon and earth is zero
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Correct answer: The moon and earth is equal and opposite129. A satellite orbiting the earth receives centripetal force from:
- A. Gravitational pull of the sun on the satellite
- B. Gravitational pull of the earth on the satellite
- C. The rocket engine attached to the satellite
- D. None of the above
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Correct answer: Gravitational pull of the earth on the satellite130. If the distance between two bodies is doubled, the gravitational force between them becomes:
- A. Double
- B. Half of the original value
- C. One third of the original value
- D. One fourth of the original value
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Correct answer: One fourth of the original value