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GRAVITATION MCQs

Total Questions : 50 | Page 5 of 5 pages
Question 41. Mass is a
  1.    Vector
  2.    Scalar
 Discuss Question
Answer: Option B. -> Scalar
Question 42. Two objects of different masses falling freely near the surface of the moon would
  1.    have same velocities at any instant
  2.    have different acceleration
  3.    experience forces of same magnitude
  4.    undergo a change in their inertia
 Discuss Question
Answer: Option A. -> have same velocities at any instant
Question 43. Acceleration due to gravity on the surface of a planet is g/5 where g is the value on the earth
  1.    h/5
  2.    h/25
  3.    5h
  4.    25h
 Discuss Question
Answer: Option C. -> 5h
Question 44. Which of the following is true about the Fg between two masses?
  1.    Fg ∝ m1m2/r
  2.    Fg ∝ r/m1m2
  3.    Fg ∝ (m1 + m2)/r
  4.    Fg ∝ m1m2/r2
 Discuss Question
Answer: Option D. -> Fg ∝ m1m2/r2
Question 45. Which of the following is true about the Fg and the separation distance between two masses
  1.    Fg ∝ r
  2.    Fg ∝ r2
  3.    Fg ∝ 1/r
  4.    Fg ∝ 1/r2
 Discuss Question
Answer: Option D. -> Fg ∝ 1/r2
Question 46. Which of the following is true about the Fg between two masses (m1 and m2)?
  1.    Fg ∝ m1m2
  2.    Fg ∝ m1 + m2
  3.    Fg ∝ 1/m1m2
  4.    Fg ∝ 1/(m1 + m2)
 Discuss Question
Answer: Option A. -> Fg ∝ m1m2
Question 47. Since Fg ∝ m1m2/r2, there must be a proportionality constant
  1.    a really big number
  2.    a really small number
  3.    1
  4.    9.8
 Discuss Question
Answer: Option B. -> a really small number
Question 48. The objects scientists sent to the space and they revolves around the Earth are termed as
  1.    natural satellites
  2.    artificial satellites
  3.    solar cars
  4.    robots
 Discuss Question
Answer: Option B. -> artificial satellites
Question 49. The value of acceleration due to gravity
  1.    decreases from pole to equator
  2.    is least on equator
  3.    is least on equator
  4.    Both A & B
 Discuss Question
Answer: Option D. -> Both A & B
Question 50. The gravitational force of attraction between the satellite and the Earth provides the necessary
  1.    centrifugal force
  2.    centripetal force
  3.    dynamic force
  4.    translatory force
 Discuss Question
Answer: Option B. -> centripetal force

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