ALMA MATER ONLINE POINT(ਅਲਮਾ ਮੈਟਰ ਔਨਲਾਈਨ ਪੁਆਇੰਟ)
Questions
1. Who proposed the universal law of gravitation?
a) Albert Einstein
b) Isaac Newton
c) Galileo Galilei
d) Johannes Kepler
2. The value of the universal gravitational constant (GGG) is:
a) 6.67×10−96.67 \times 10^{-9}6.67×10−9 N m²/kg²
b) 6.67×10−116.67 \times 10^{-11}6.67×10−11 N m²/kg²
c) 9.89.89.8 m/s²
d) 101010 N/kg
3. The force of attraction between two objects depends on their:
a) Masses only
b) Distance only
c) Masses and distance
d) Volume
4. The SI unit of gravitational force is:
a) Joule
b) Newton
c) Pascal
d) Kilogram
5. Acceleration due to gravity on Earth is denoted by:
a) GGG
b) ggg
c) FFF
d) aaa
6. What is the value of acceleration due to gravity (ggg) on Earth?
a) 9.89.89.8 m/s²
b) 101010 m/s²
c) 6.67×10−116.67 \times 10^{-11}6.67×10−11 m/s²
d) 151515 m/s²
7. The formula for the force of gravitation is:
a) F=G×m1⋅m2r2F = G \times \frac{m_1 \cdot m_2}{r^2}F=G×r2m1⋅m2
b) F=m⋅aF = m \cdot aF=m⋅a
c) F=G⋅m1⋅r2F = G \cdot m_1 \cdot r^2F=G⋅m1⋅r2
d) F=m1⋅m2G⋅r2F = \frac{m_1 \cdot m_2}{G \cdot r^2}F=G⋅r2m1⋅m2
8. The weight of an object is defined as:
a) Mass of the object
b) Gravitational force acting on the object
c) Volume of the object
d) None of these
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9. The mass of an object on the moon is:
a) One-sixth of its mass on Earth
b) Equal to its mass on Earth
c) Six times its mass on Earth
d) Zero
10. The weight of an object on the moon is:
a) Equal to its weight on Earth
b) Six times its weight on Earth
c) One-sixth of its weight on Earth
d) Zero
11. Gravitational force is always:
a) Attractive
b) Repulsive
c) Both attractive and repulsive
d) Neither
12. What happens to the gravitational force if the distance between two objects is doubled?
a) It is halved
b) It becomes four times weaker
c) It becomes four times stronger
d) It remains the same
13. If the mass of one object is doubled, the gravitational force between two objects will:
a) Halve
b) Double
c) Quadruple
d) Remain the same
14. What is the formula for weight (WWW)?
a) W=m⋅gW = m \cdot gW=m⋅g
b) W=G⋅m2W = G \cdot m^2W=G⋅m2
c) W=G⋅m1⋅m2r2W = \frac{G \cdot m_1 \cdot m_2}{r^2}W=r2G⋅m1⋅m2
d) W=mgW = \frac{m}{g}W=gm
15. The value of acceleration due to gravity is:
a) Same everywhere on Earth
b) Greater at the poles than at the equator
c) Greater at the equator than at the poles
d) Zero at the poles
16. The force that keeps planets in orbit around the sun is called:
a) Gravitational force
b) Frictional force
c) Magnetic force
d) Centripetal force
17. A satellite stays in orbit due to the balance between:
a) Gravitational force and magnetic force
b) Centripetal force and gravitational force
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ALMA MATER ONLINE POINT(ਅਲਮਾ ਮੈਟਰ ਔਨਲਾਈਨ ਪੁਆਇੰਟ)
c) Magnetic force and friction
d) Gravitational force and centrifugal force
18. Escape velocity depends on:
a) The mass of the body
b) The mass of the planet
c) Both the body and the planet
d) None of these
19. What is the SI unit of mass?
a) Newton
b) Joule
c) Kilogram
d) Pascal
20. The gravitational force between two objects is inversely proportional to:
a) The square of the distance between them
b) The distance between them
c) The product of their masses
d) Their masses
21. The gravitational force between two objects is directly proportional to:
a) Their masses
b) The square of the distance between them
c) Their volumes
d) None of these
22. Acceleration due to gravity is zero at:
a) The center of the Earth
b) The poles
c) The equator
d) None of these
23. What happens to the weight of an object as it is taken to a higher altitude?
a) It increases
b) It decreases
c) It remains the same
d) It becomes zero
24. Gravitational force is weakest in:
a) Outer space
b) Earth's surface
c) Underwater
d) Inside the Earth's crust
25. The weight of a body is:
a) Constant everywhere
b) Variable, depending on gravity
c) Independent of gravity
d) The same as its mass
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ALMA MATER ONLINE POINT(ਅਲਮਾ ਮੈਟਰ ਔਨਲਾਈਨ ਪੁਆਇੰਟ)
26. The gravitational constant (GGG) is:
a) Scalar
b) Vector
c) Both scalar and vector
d) None of these
27. The weight of an object on a planet depends on:
a) The planet's mass
b) The planet's radius
c) The value of ggg on the planet
d) All of these
28. A man weighs 600 N on Earth. What will be his weight on the moon?
a) 100 N
b) 3600 N
c) 60 N
d) 600 N
29. The Earth attracts the moon due to:
a) Magnetic force
b) Gravitational force
c) Frictional force
d) Nuclear force
30. The acceleration due to gravity decreases:
a) With an increase in altitude
b) With a decrease in altitude
c) Toward the center of the Earth
d) None of these
31. If the mass of the Earth increases, the gravitational force on an object will:
a) Decrease
b) Increase
c) Remain the same
d) Become zero
32. The gravitational force between two objects is independent of:
a) The product of their masses
b) The distance between them
c) The gravitational constant
d) The medium between them
33. Why do objects weigh less on the moon than on Earth?
a) The moon has no atmosphere
b) The moon's gravity is weaker
c) The moon rotates faster
d) The moon is closer to the sun
34. Weightlessness experienced in space is due to:
a) Lack of gravity
b) Zero acceleration due to gravity
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ALMA MATER ONLINE POINT(ਅਲਮਾ ਮੈਟਰ ਔਨਲਾਈਨ ਪੁਆਇੰਟ)
c) Free-fall condition
d) Low mass of astronauts
35. Gravitational force acts:
a) On all objects irrespective of their masses
b) Only on objects with large masses
c) Only on objects on Earth
d) Only on objects in space
36. What is the shape of Earth’s orbit around the Sun?
a) Circular
b) Elliptical
c) Parabolic
d) None of these
37. If the distance between two masses is reduced to half, the gravitational force becomes:
a) Four times
b) Half
c) Double
d) One-fourth
38. Which phenomenon is caused by the gravitational pull of the Moon?
a) Ocean tides
b) Earthquakes
c) Volcanic eruptions
d) None of these
39. The radius of the Earth is approximately:
a) 6400 km
b) 7000 km
c) 8000 km
d) 10,000 km
40. The time period of a satellite orbiting Earth depends on:
a) Its mass
b) Its orbital radius
c) Both mass and radius
d) None of these
41. The weight of an object is measured in:
a) Newtons
b) Kilograms
c) Grams
d) Joules
42. Why does the gravitational force not affect us between small objects?
a) The masses are too small
b) The force is too weak
c) The distance is too large
d) Both (a) and (b)
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ALMA MATER ONLINE POINT(ਅਲਮਾ ਮੈਟਰ ਔਨਲਾਈਨ ਪੁਆਇੰਟ)
43. Which planet has the strongest gravity?
a) Earth
b) Jupiter
c) Mars
d) Saturn
44. The gravitational potential energy of an object depends on:
a) Its mass and height
b) Its weight only
c) Its velocity only
d) Its acceleration
45. The motion of the Moon around Earth is an example of:
a) Circular motion
b) Linear motion
c) Oscillatory motion
d) Translatory motion
46. The escape velocity of Earth is approximately:
a) 11.2 km/s
b) 9.8 km/s
c) 15 km/s
d) 8.2 km/s
47. Which planet has the weakest gravity?
a) Mercury
b) Jupiter
c) Earth
d) Saturn
48. What happens to the gravitational force when two objects are brought closer?
a) It increases
b) It decreases
c) It remains the same
d) It becomes zero
49. Gravitational potential energy is maximum when:
a) The object is at maximum height
b) The object is on the ground
c) The object is in free fall
d) None of these
50. The value of g on the surface of Mars is:
a) Greater than Earth
b) Equal to Earth
c) Less than Earth
d) Zero
Here are the answers to the 50 MCQs on Gravitation:
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ALMA MATER ONLINE POINT(ਅਲਮਾ ਮੈਟਰ ਔਨਲਾਈਨ ਪੁਆਇੰਟ)
1. b
2. b
3. c
4. b
5. b
6. a
7. a
8. b
9. b
10. c
11. a
12. b
13. b
14. a
15. b
16. a
17. d
18. b
19. c
20. a
21. a
22. a
23. b
24. a
25. b
26. a
27. d
28. a
29. b
30. a
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ALMA MATER ONLINE POINT(ਅਲਮਾ ਮੈਟਰ ਔਨਲਾਈਨ ਪੁਆਇੰਟ)
31. b
32. d
33. b
34. c
35. a
36. b
37. a
38. a
39. a
40. b
41. a
42. d
43. b
44. a
45. a
46. a
47. a
48. a
49. a
50. c
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