Short Questions (120)
Easy Questions (30%)
1. What is gravitation?
2. Define the force of gravitation.
3. Who formulated the law of gravitation?
4. State the law of gravitation.
5. What is meant by gravitational force?
6. What is Newton's third law of motion?
7. How does the law of gravitation relate to Newton's third law of motion?
8. Define gravitational field.
9. What is the value of gravitational constant (G)?
10. How is the gravitational field strength represented?
11. What is the unit of gravitational field strength?
12. What is the mass of the Earth?
13. State the value of acceleration due to gravity (g) at sea level.
14. What is the effect of altitude on the value of g?
15. What happens to the value of g as altitude increases?
16. Define artificial satellites.
17. Give two examples of artificial satellites.
18. What is the use of artificial satellites?
19. What is meant by the motion of artificial satellites?
20. What keeps artificial satellites in their orbit?
21. How does gravitational force act on artificial satellites?
22. State the relationship between mass and gravitational force.
23. What is meant by the mass of the Earth?
24. What is the formula for calculating gravitational force?
25. What factors affect the value of g?
26. Why does the value of g decrease with altitude?
27. What is the difference between natural and artificial satellites?
28. Define weight.
29. How is weight related to gravity?
30. What is the value of g at the center of the Earth?
31. What is the importance of artificial satellites?
32. How are satellites launched into space?
33. State the importance of gravitational force in the solar system.
34. What is meant by free fall?
35. How does gravity influence the motion of planets?
Moderate Questions (40%)
36. Derive the formula for gravitational force.
37. How does the law of gravitation apply to planets?
38. Explain the concept of gravitational field strength.
39. How can the mass of the Earth be calculated using gravitational laws?
40. What is the effect of the shape of the Earth on the value of g?
41. How does gravity vary with altitude and depth?
42. What is the relationship between gravitational force and the distance between two bodies?
43. Explain how gravitational force acts as a centripetal force.
44. Describe how artificial satellites are kept in motion.
45. Explain the variation of g with altitude using a graph.
46. How does gravitational force depend on the mass of an object?
47. How does the concept of gravitational force explain the motion of artificial satellites?
48. State and explain the equation for weight.
49. How does gravitational field strength vary at different locations on Earth?
50. What is the difference between gravitational force and gravitational field strength?
51. How is the motion of artificial satellites affected by Earth's gravity?
52. Explain why astronauts experience weightlessness in space.
53. Describe the working of communication satellites.
54. Explain how Newton’s third law of motion is applied in the motion of satellites.
55. How do artificial satellites help in weather forecasting?
56. How is the mass of the Earth determined using Newton’s law of gravitation?
57. What is the significance of Newton’s law of gravitation?
58. How does the value of g change with the shape and rotation of Earth?
59. What are the uses of artificial satellites in scientific research?
60. Explain the difference between gravitational force and electromagnetic force.
61. Describe the effects of varying gravitational force on the trajectory of a satellite.
62. How is gravitational potential energy related to gravitational force?
63. Explain the concept of gravitational potential energy in relation to height.
64. What is the escape velocity of a satellite?
65. How is the motion of planets around the Sun influenced by gravity?
66. How does the mass of an object affect its gravitational pull?
67. Describe the conditions for the stability of artificial satellites in orbit.
68. Explain how gravitational force contributes to the structure of the universe.
69. How does Newton’s third law explain the interaction between two bodies?
70. Describe the concept of a gravitational field using field lines.
71. How does the motion of artificial satellites help in GPS systems?
72. Explain the significance of geostationary satellites.
73. How does the force of gravity vary between the poles and the equator?
74. How does gravitational force vary in a multi-planetary system?
75. Discuss the challenges faced in maintaining the motion of artificial satellites.
76. How does the weight of an object vary on different planets?
77. Describe how gravitational force can affect the path of a comet.
78. What is the role of gravitational force in tides?
79. How does gravity affect the formation of galaxies?
80. Explain how gravity contributes to the movement of tectonic plates.
Tough Questions (30%)
81. Derive the equation for gravitational field strength.
82. Explain the significance of gravitational constant (G) in universal gravitation.
83. Describe how gravitational force acts between three bodies in space.
84. How can the value of g be experimentally determined at different altitudes?
85. Explain the motion of artificial satellites using the law of gravitation.
86. How does gravitational force contribute to the orbital decay of satellites?
87. Discuss the effects of altitude on the stability of satellite orbits.
88. Explain how the variation of g with altitude affects projectile motion.
89. Derive the expression for the gravitational potential energy of an object at a height.
90. What are the applications of gravitational force in understanding black holes?
91. How does gravity influence the dynamics of a multi-planetary system?
92. Describe the concept of gravitational waves and their significance.
93. Explain how the mass of planets can be determined using artificial satellites.
94. How do variations in gravitational field strength affect fluid motion in space?
95. Discuss the concept of escape velocity in terms of gravitational force.
96. Explain how gravitational force influences the orbital speed of satellites.
97. Derive the relationship between gravitational force and centripetal force.
98. What are the limitations of the universal law of gravitation?
99. How does the concept of gravitational lensing support the theory of relativity?
100. Discuss the role of gravitational force in the formation of solar systems.
101. Explain the effects of gravitational force on the trajectory of asteroids.
102. How do artificial satellites help in exploring gravitational anomalies?
103. What are the challenges in determining the exact value of g at different altitudes?
104. How does gravitational force affect the shape of planets?
105. Discuss the role of gravity in the dynamics of binary star systems.
106. What are the effects of gravitational force on objects moving at high velocities?
107. How do gravitational interactions between planets lead to changes in their orbits?
108. Discuss how gravitational force influences the motion of galaxies.
109. How does gravity affect the energy distribution in the universe?
110. Explain how gravitational potential is calculated for non-uniform objects.
Long Questions (10)
Easy Questions (3)
1. Define gravitational force. Derive the formula for the force of gravitation and explain its significance.
2. Describe the variation of g with altitude. Explain why the value of g decreases with an increase in altitude.
3. What is a gravitational field? Discuss its properties and explain how gravitational field strength is calculated.
Moderate Question (4)
4. Describe the law of gravitation and discuss its relationship with Newton’s third law of motion. Explain with examples.
5. Discuss the motion of artificial satellites in detail. How do gravitational forces keep these satellites in orbit?
6. Explain how the mass of Earth is determined using gravitational laws. Show all necessary calculations and assumptions.
7. Discuss the applications of artificial satellites in communication, weather forecasting, and scientific research.
Tough Questions (4)
8. Derive the equation for gravitational potential energy. Explain the significance of this energy in the motion of celestial bodies.
9. What is escape velocity? Derive the formula for escape velocity and explain its relevance to launching artificial satellites.
10. Discuss the challenges faced in understanding gravitational force at a quantum level. How do gravitational waves contribute to our understanding of gravity?