This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Physics Part I > Class 11 Physics (Part I) Chapter 6 Gravitation – Quiz 13 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 13 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The gravitational force between Earth and the Sun causes A) Earth's atmosphere. B) Earth to orbit the Sun. C) The Moon to orbit Earth. D) Earth to orbit the Moon. Show Answer Correct Answer: B) Earth to orbit the Sun. 2. ..... holds all of the planets in orbit around the sun. A) Weight. B) Gravity. C) Motion. D) Force. Show Answer Correct Answer: B) Gravity. 3. Mass and weight are the same thing. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 4. If Earth's mass was cut in half, what would happen to your mass? A) Decrease because gravitational force decreases. B) Increase because gravitational force increases. C) Decrease because gravitational force increases. D) Nothing, mass is not affected by gravitational force. Show Answer Correct Answer: D) Nothing, mass is not affected by gravitational force. 5. Arjun and Luna were discussing about a famous experiment conducted by Henry Cavendish. Evelyn joined them and asked, 'What did this experiment determine?' A) The value of the gravitational constant. B) The value of g. C) The value of the Moon's acceleration. D) The value of the Earth's mass. Show Answer Correct Answer: A) The value of the gravitational constant. 6. The value of 'g' (Gravitation). A) Increases as we go above the earth's surface. B) Decreases as we go to the center of the earth. C) Remains constant. D) Is more at equator and less at poles. Show Answer Correct Answer: B) Decreases as we go to the center of the earth. 7. What happens if the distance between objects with mass increases? A) Gravitational attraction between the objects decreases. B) Gravitational attraction between the objects increases. C) All the above. D) None of the above. Show Answer Correct Answer: A) Gravitational attraction between the objects decreases. 8. Mr. Holland drops 6.9kg of metal from a plane over the poles and the equator at 1 km above the ground.Where will the metal reach the ground first? (no air resistance) and (g = $10ms^{-1}$ A) The equator. B) The poles. C) They will fall at the same time. D) Cannot be determined. Show Answer Correct Answer: B) The poles. 9. Two objects are attracted to each other with 125 N of gravitational force.What would the force between them be if the distance between them were 5x bigger? A) 100 N. B) 3125 N. C) 25 N. D) 5 N. Show Answer Correct Answer: D) 5 N. 10. ..... is the fundamental quantity A) Length. B) Area. C) Volume. D) None. Show Answer Correct Answer: A) Length. 11. A ball is dropped from rest from a height of 80 m. What is its speed just before it hits the ground? A) 50 m/s. B) 30 m/s. C) 20 m/s. D) 40 m/s. Show Answer Correct Answer: D) 40 m/s. 12. This person was the first to use a telescope to make observations in the sky- A) Aristotle. B) Galileo. C) Ptolemy. D) Copernicus. Show Answer Correct Answer: B) Galileo. 13. Why does an object float or sink when placed on the surface of water? A) Because of the weight of the object. B) Because of the gravitational force exerted by the earth. C) Because of the buoyant force exerted by the water. D) Because of the density of the object. Show Answer Correct Answer: C) Because of the buoyant force exerted by the water. 14. The velocity with which a body should be projected from the surface of the earth such that itescapes the gravitational field of earth is called? A) Critical velocity. B) Escape Velocity. C) Orbital velocity. D) Terminal Velocity. Show Answer Correct Answer: B) Escape Velocity. 15. An object falls through a distance h in certain time on the earth. The same object falls through a distance 4h in the same time on a planet. If 'g' is acceleration due to gravity on the earth, acceleration due to gravity on that planet is A) 2 g. B) G/4. C) G/2. D) 4 g. Show Answer Correct Answer: B) G/4. 16. What is gravity in the context of space exploration? A) A force that pulls objects toward each other. B) A force that pushes objects apart. C) A force that stops objects from moving. D) A force that changes an object's color. Show Answer Correct Answer: A) A force that pulls objects toward each other. 17. Which of the following planets has the highest value of g? A) Earth. B) Jupiter. C) Mars. D) Venus. Show Answer Correct Answer: B) Jupiter. 18. If the satellite is very close to the surface of the earth then, then orbital velocity is ..... A) $\sqrt[]{GR^3}$. B) $\sqrt[]{GR}$. C) $-\sqrt[]{GMR}$. D) $\sqrt[]{gR}$. Show Answer Correct Answer: D) $\sqrt[]{gR}$. 19. I man who weighs 1000N on the surface of the earth will weigh how much when we double the distance? A) 250 N. B) 2000 N. C) 500 N. D) 4000N. Show Answer Correct Answer: A) 250 N. 20. What is the relationship between the gravitational force and the distance between the center of two objects? A) Gravitational force increases with distance. B) Gravitational force is unrelated to distance. C) Gravitational force decreases with distance. D) Gravitational force remains constant with distance. Show Answer Correct Answer: C) Gravitational force decreases with distance. 21. The orbital period of a geostationary satellite is A) Slightly more than 24 hours. B) Slightly less than 24 hours. C) Equal to 24 hours. D) Equal to 12 hours. Show Answer Correct Answer: C) Equal to 24 hours. 22. What is gravitational force? A) It makes objects that are moving stop. B) The force of attraction between two objects. C) It makes objects at rest start moving. D) It pulls you into space. Show Answer Correct Answer: B) The force of attraction between two objects. 23. Energy stored because of gravity is called: A) Gravitational Potential Energy. B) Kinetic Energy. C) Chemical Energy. D) Mechanical Advantage. Show Answer Correct Answer: A) Gravitational Potential Energy. 24. The gravitational force exerted by an object depends on its weight. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 25. If the distance between two objects is tripled, how does the gravitational force between them change according to the Law of Gravitation? A) It becomes three times weaker. B) It remains unchanged. C) It becomes nine times weaker. D) It becomes nine times stronger. Show Answer Correct Answer: C) It becomes nine times weaker. 26. Which of the following statement is correct regarding geostationary satellites. A) Satellite that moves around the Earth at changing orbit height. B) It is used to get the information for weather broadcasting, GPS and imaging the earth surface. C) Orbit period is 24 hours, same to the Earth orbit period. D) Its orbit must not always be above the earth quarter. Show Answer Correct Answer: C) Orbit period is 24 hours, same to the Earth orbit period. 27. According to Newton's Law of Universal Gravitation, what happens to the gravitational force between two objects if the distance between them is doubled? A) The gravitational force remains the same. B) The gravitational force is halved. C) The gravitational force is reduced to one-fourth. D) The gravitational force is doubled. Show Answer Correct Answer: C) The gravitational force is reduced to one-fourth. 28. Is it true that the moon falls? A) No, it could have fallen by now. B) No, there is no good explanation as to why. C) Yes, the moon is falling around the earth due to its tangential velocity. D) Yes, the moon is falling straight down. Show Answer Correct Answer: C) Yes, the moon is falling around the earth due to its tangential velocity. 29. Galileo proved that objects fall at the same rate, regardless of their: A) Mass. B) Size. C) Shape. D) All of the above. Show Answer Correct Answer: A) Mass. 30. The variables that affect the gravitational interaction between two objects are: A) Masses and directions of motions of the objects. B) Masses and speeds of the objects. C) Masses and distances between the objects. D) Distance between and speeds of the objects. Show Answer Correct Answer: C) Masses and distances between the objects. 31. The minimum velocity with which a body should be thrown vertically upwards from the surface of the Earth so that it escapes the Earth's gravitational field, is called the ..... of the body. A) Vertical velocity. B) Critical Velocity. C) Orbital velocity. D) Escape Velocity. Show Answer Correct Answer: D) Escape Velocity. 32. Who discovered the Law of Gravitation? A) Isaac Newton. B) Galileo Galilei. C) Albert Einstein. D) Thomas Edison. Show Answer Correct Answer: A) Isaac Newton. 33. The law of universal gravitation is credited to whom? A) Einstein. B) Darwin. C) Galileo. D) Newton. Show Answer Correct Answer: D) Newton. 34. The weight of body at earth's surface is W. At a depth half way to the centre of the earth, it will be (assuming uniform density in earth): A) W /2. B) Zero. C) W /4. D) W. Show Answer Correct Answer: A) W /2. 35. What did Henry Cavendish's experiment determine? A) The value of the Earth's mass. B) The value of the Moon's acceleration. C) The value of g. D) The value of the gravitational constant. Show Answer Correct Answer: D) The value of the gravitational constant. 36. Physical quantity are ..... A) Quantity that are being measured. B) Comparing unknown quantity with quantity. C) Dependent on each other. D) None. Show Answer Correct Answer: A) Quantity that are being measured. 37. In which case the escape velocity is maximum A) When angle of projection is 45$^\circ$. B) When it is projected vertically up. C) When it is projected horizontally. D) The escape velocity is independent of the angle of projection. Show Answer Correct Answer: D) The escape velocity is independent of the angle of projection. 38. What is the force of gravitation between two objects proportional to? A) The distance between them. B) The product of their masses. C) The square of the distance between them. D) Both B and C. Show Answer Correct Answer: D) Both B and C. 39. What does the law of gravitational force depend on between two objects? A) Color and shape. B) Speed and direction. C) Mass and distance. D) Temperature and pressure. Show Answer Correct Answer: C) Mass and distance. 40. Closest distance between a planet and the sun (called periapsis for other celestial bodies) A) Perihelion. B) Minimum Orbital Intersection Distance. C) Maximum Solar Elongation. D) Apogee. Show Answer Correct Answer: A) Perihelion. 41. Kepler's third law states that the square of the orbital period of a planet is proportional to A) Fourth power of its distance from the Sun. B) Cube root of its distance from the Sun. C) Square of its distance from the Sun. D) Cube of its distance from the Sun. Show Answer Correct Answer: D) Cube of its distance from the Sun. 42. Why do all of the planets orbit the sun rather than Earth? A) The sun is a star. B) The sun has more mass. C) The Earth is heavier. D) The sun is in the middle of the milky way. Show Answer Correct Answer: B) The sun has more mass. 43. A geo-stationary satellite is orbiting the earth at a height of 6 R about the surface of earth, R being the radius of earth. The time period of another satellite at a height of 2.5 R from the surface of earth is A) $\left(\frac{6}{\sqrt{2}}\right)hr$. B) 10 hr. C) 6 hr. D) $6\sqrt{2}hr$. Show Answer Correct Answer: D) $6\sqrt{2}hr$. 44. Gravitational force is always ..... in nature. A) ATTRACTIVE. B) LUMINOUS. C) LOWER. D) ALL. Show Answer Correct Answer: A) ATTRACTIVE. 45. As the product of two objects' masses increases, the pull of gravity A) Constant. B) Increases. C) Stays the same. D) Decreases. Show Answer Correct Answer: B) Increases. 46. Why doesn't a heavy object fall faster than a light object? A) Because the force of gravity is weaker on heavy objects. B) Because the force of gravity is stronger on heavy objects. C) Because the acceleration due to gravity is the same for all objects. D) Because the acceleration due to gravity is different for heavy and light objects. Show Answer Correct Answer: C) Because the acceleration due to gravity is the same for all objects. 47. 7) When a mango falls from a mango tree then A) Only the Earth attracts the mango. B) Only the mango attracts the Earth. C) Both the mango and the Earth attract each other. D) Both the mango and the Earth repel each other. Show Answer Correct Answer: C) Both the mango and the Earth attract each other. 48. What is the effect of more mass between two objects on gravitational force? A) Increases. B) Disappears. C) Remains the same. D) Decreases. Show Answer Correct Answer: A) Increases. 49. Newton's Universal Law of Gravitation explained about ..... A) Gravitational force. B) Magnetic force. C) Centripetal force. D) None of the above. Show Answer Correct Answer: A) Gravitational force. 50. Kepler's first law says that the planets move around the Sun in an ellipse with the Sun at one focus. What is at the other focus? A) Empty space. B) The planet being considered. C) The Earth. D) Your teacher. E) The Moon. Show Answer Correct Answer: A) Empty space. 51. What keeps planets in orbit according to Newton? A) Magnetic force. B) Tension force. C) Gravitational force. D) Frictional force. Show Answer Correct Answer: C) Gravitational force. 52. Calculate the centripetal force required to make a 5 kg ball move 4 m/s in a circle with a radius of 2 m. A) 30 N. B) 40 N. C) 20 N. D) 10 N. Show Answer Correct Answer: B) 40 N. 53. The larger the mass of an object ..... A) The smaller the force of gravity. B) The larger the force of gravity. C) Mass has no effect on the amount of gravity an object experiences. D) None of the above. Show Answer Correct Answer: B) The larger the force of gravity. 54. Which of the following statements about Rutherford's model of atom are correct?(i) Considered the nucleus as positively charged.(ii) Established that the a-particles are four times as heavy as a hydrogen atom.(iii) Can be compared to solar system.(iv) Was in agreement with Thomson's model. A) (i) and (iii). B) (ii) and (iii). C) (i) and (iv). D) Only (i). Show Answer Correct Answer: A) (i) and (iii). 55. A stone is dropped from rest. How long does it take to reach a speed of 30 m/s?(Assume g=10 m/s2) A) 3 s. B) 4 s. C) 2 s. D) 1.5 s. Show Answer Correct Answer: A) 3 s. 56. The orbital velocity of a satellite close to the Earth depends on: A) The mass of the satellite. B) The radius of the orbit. C) The mass of the Earth. D) Both B and C. Show Answer Correct Answer: D) Both B and C. 57. Gravity is the phenomenon between A) Earth and moon. B) Earth and you. C) Earth and any object. D) None. Show Answer Correct Answer: C) Earth and any object. 58. According to Kepler's first law, the paths of the planets are circular in shape. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 59. A solid exerts pressure of 20 Pa on a surface of 2m$^{2}$ . Find its weight. A) 50 N. B) 40 N. C) 30 N. D) 80 N. Show Answer Correct Answer: B) 40 N. 60. Does the earth attract the moon with a force that is greater, smaller, or the same as the force with which the moon attracts the earth? A) Greater. B) Smaller. C) The same. D) Depends on the distance between the earth and the moon. Show Answer Correct Answer: C) The same. ← PreviousNext →Related QuizzesScience QuizzesClass 11 QuizzesClass 11 Physics (Part I) Chapter 6 Gravitation Quiz 1Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 2Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 3Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 4Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 5Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 6Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 7Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books