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GRAVITATION MCQs

Total Questions : 50 | Page 2 of 5 pages
Question 11. The value of gravitation on moon's surface is 1
  1.    80 N
  2.    100 Ns
  3.    120 N
  4.    160 N
 Discuss Question
Answer: Option D. -> 160 N
Question 12. A satellite revolving very close to earth has a speed nearly
  1.    7 ms-1
  2.    8 ms-1
  3.    9 ms-1
  4.    10 ms-1
 Discuss Question
Answer: Option B. -> 8 ms-1
Question 13. The Earth attracts a body with a force equal to its
  1.    weight
  2.    area
  3.    volume
  4.    pollution
 Discuss Question
Answer: Option A. -> weight
Question 14. The first man who came up with the idea of gravity was
  1.    Henry Briggs
  2.    John Napier
  3.    Jobst Burgi
  4.    Isaac Newton
 Discuss Question
Answer: Option D. -> Isaac Newton
Question 15. The velocity of the geostationary satellite to earth is
  1.    10 ms-1
  2.    15 ms-1
  3.    zero
  4.    1 ms-1
 Discuss Question
Answer: Option C. -> zero
Question 16. If two masses are m1 and m2, distance is ‘d’, and constant of gravitation is ‘G’, then the gravitational force for attraction will be
  1.    F = G (m1 m2/d²)
  2.    F = G (m1 + m2/d²)
  3.    F = G (m1 - m2/d²)
  4.    F = G (d²/m1 - m2)
 Discuss Question
Answer: Option A. -> F = G (m1 m2/d²)
Question 17. If the mass of the Earth is 6 × 1024, radius is 6400 km and altitude is 1000 km, then the value of ‘g’ will be
  1.    8 ms-2
  2.    7.3 ms-2
  3.    9.5 ms-2
  4.    8.9 ms-2
 Discuss Question
Answer: Option B. -> 7.3 ms-2
Question 18. The velocity of geostationary satellite with respect to Earth is
  1.    half
  2.    triple
  3.    zero
  4.    double
 Discuss Question
Answer: Option C. -> zero
Question 19. The action and reaction due to force of gravitation are equal in magnitude but opposite in
  1.    size
  2.    direction
  3.    volume
  4.    none of above
 Discuss Question
Answer: Option B. -> direction
Question 20. GPS consists of
  1.    23 earth satellites
  2.    24 earth satellites
  3.    25 earth satellites
  4.    26 earth satellites
 Discuss Question
Answer: Option B. -> 24 earth satellites

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