This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Physics Part I > Class 11 Physics (Part I) Chapter 6 Gravitation – Quiz 14 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 14 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. If the radius of the earth were to shrink by 1% its mass remaining the same, the acceleration due to gravity on the earth's surface would: A) Remain unchanged. B) Increase by 1%. C) Decrease by 2%. D) Increase by 2%. Show Answer Correct Answer: D) Increase by 2%. 2. Which of the following best describes the relationship between gravitational force and distance between two objects? A) Gravitational force is directly proportional to the distance. B) Gravitational force is inversely proportional to the distance. C) Gravitational force is inversely proportional to the square of the distance. D) Gravitational force is directly proportional to the square of the distance. Show Answer Correct Answer: C) Gravitational force is inversely proportional to the square of the distance. 3. Why did people believe in the Geocentric vs the Heliocentric solar system? A) Geocentric system had been around for a LONG time. B) People don't like change. C) There wasn't enough proof to support the Heliocentric system. D) All of these answers are correct. Show Answer Correct Answer: D) All of these answers are correct. 4. Gold weighs a little ..... on poles than equator. A) Less. B) More. C) All the above. D) None of the above. Show Answer Correct Answer: B) More. 5. If a satellite revolving in an orbit of radius r has time period of 8 hour, a time period of another satellite revolving around the same planet in an orbit of radius 2r will be A) $32\sqrt{2}$. B) 64 hour. C) 48 hour. D) $16\sqrt{2}$. Show Answer Correct Answer: D) $16\sqrt{2}$. 6. If you triple the mass of an object while keeping the acceleration constant, you will ..... A) Have no effect. B) Have 1/3 the force. C) Have half the force. D) Have triple the force. Show Answer Correct Answer: D) Have triple the force. 7. How does gravitational potential energy depend on mass and height? A) Gravitational potential energy depends directly on mass and height. B) Gravitational potential energy is independent of mass and height. C) Gravitational potential energy decreases with increasing mass and height. D) Gravitational potential energy only depends on the mass of the object. Show Answer Correct Answer: A) Gravitational potential energy depends directly on mass and height. 8. The gravitational attraction between an object near the Earth's surface and the Earth. A) Normal force. B) Weight. C) Friction. D) Tension. Show Answer Correct Answer: B) Weight. 9. Which of the following factors affects the escape velocity of an object from the surface of the earth? A) Mass of earth. B) Gravity of satellite. C) Acceleration due to gravity. D) Mass of object. Show Answer Correct Answer: A) Mass of earth. 10. In the equation for gravitational potential energy, 'E$_{p}$' stands for A) Electrical energy. B) Kinetic energy. C) Gravitational potential energy. D) Elastic potential energy. Show Answer Correct Answer: C) Gravitational potential energy. 11. The centers of two 15 kg spheres are separated by 3 meters. What is the gravitational force between the two spheres? A) 2.72 x 10$^{-14}$. B) 1.42 x 10$^{-8}$. C) 1.67 x 10$^{-9}$. D) 3.44 x 10$^{-9}$. Show Answer Correct Answer: C) 1.67 x 10$^{-9}$. 12. What is the force that pulls the Moon towards the Earth? A) Centripetal force. B) Torsional force. C) Frictional force. D) Gravitational force. Show Answer Correct Answer: D) Gravitational force. 13. What happens to the force between two objects if the distance between them is doubled and tripled? A) The force is doubled and tripled respectively. B) The force is halved and one-third respectively. C) The force is quadrupled and multiplied by nine respectively. D) The force remains the same. Show Answer Correct Answer: B) The force is halved and one-third respectively. 14. The Force of gravity is INVERSELY proportional to ..... A) Distance. B) Time. C) Mass. D) Weight. Show Answer Correct Answer: A) Distance. 15. How does Fg change if one of the masses doubles? (Hint:Use Laws of Ones) A) The force stays the same. B) The force is increased by a factor of 4. C) The force also doubles. D) The force is reduced by half. Show Answer Correct Answer: C) The force also doubles. 16. IF WEIGHT OF AN OBJECT ON EARTH IS 42KG THEN WEIGHT OF THE OBJECT ON MOON IS ..... A) 6KG. B) 5KG. C) 7KG. D) 0KG. Show Answer Correct Answer: C) 7KG. 17. The escape velocity on Earth is approximately A) 11.2 km/s. B) 15 km/s. C) 7 km/s. D) 5 km/s. Show Answer Correct Answer: A) 11.2 km/s. 18. Isotopes have same ..... but different ..... A) ATOMIC NUMBER, MASS. B) MASS, ATOMIC NUMBER. C) BOTH I AND II. D) NONE OF THESE. Show Answer Correct Answer: A) ATOMIC NUMBER, MASS. 19. Oliver and Harper are discussing about gravity. Oliver says that the force of gravity is directly proportional to which of the following? A) Distance. B) Time. C) Mass. D) Weight. Show Answer Correct Answer: C) Mass. 20. A measure of the separation of the foci of an ellipse A) Perimeter. B) Circumference. C) Inclination. D) Eccentricity. Show Answer Correct Answer: D) Eccentricity. 21. Acceleration due to gravity is the same at every point on the earth's surface. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 22. What is the gravitational force between two identical 50, 000 kg asteroids whose centers of mass are separated by 1000 m? A) 1.67 x 10$^{-4}$ N. B) 1.67 x 10$^{-7}$ N. C) 2500 N. D) 3.3 x 10$^{-12}$ N. Show Answer Correct Answer: B) 1.67 x 10$^{-7}$ N. 23. If a new planet were found orbiting the Sun at 200AU, what would it's orbital period be? A) 3 billion years. B) 300 years. C) 2800 years. D) 34 years. E) 200 years. Show Answer Correct Answer: C) 2800 years. 24. Earths attracts the Moon with the same force as Moon attracts the Earth. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 25. When the mass of the objects increases the gravitational force between them A) Decreases. B) Increases. C) No change. D) None of the above. Show Answer Correct Answer: B) Increases. 26. Formula for weight is A) W=m. B) W=ma. C) W=mg. D) W=mG. Show Answer Correct Answer: C) W=mg. 27. If Mass 1 is tripled (3m) and Mass 2 is quartered (m/4) it ..... A) Will reduce the force of gravity by a factor of 3/16. B) Will increase the force of gravity by a factor of 4/3. C) Will increase the force of gravity by a factor of 12. D) Will reduce the force of gravity by a factor of 3/4. Show Answer Correct Answer: D) Will reduce the force of gravity by a factor of 3/4. 28. What is the mass of an object whose weight is 49 N? A) 10kg. B) 7kg. C) 5 kg. D) 6kg. Show Answer Correct Answer: C) 5 kg. 29. Doubling the mass of an object ..... A) Will quarter the force of gravity. B) Will quadruple the force of gravity. C) Will double the force of gravity. D) Will half the force of gravity. Show Answer Correct Answer: C) Will double the force of gravity. 30. What is the significance of the semi-major axis in an elliptical orbit? A) It determines the color of the planet. B) It is the longest diameter of the ellipse and is used in Kepler's third law to calculate the orbital period. C) It is the shortest diameter of the ellipse. D) It has no significance. Show Answer Correct Answer: B) It is the longest diameter of the ellipse and is used in Kepler's third law to calculate the orbital period. 31. Which of the following objects has the greatest gravitational force on Earth? A) A satellite in orbit. B) An apple falling from a tree. C) The Moon. D) A mountain. Show Answer Correct Answer: C) The Moon. 32. The upward force exerted by water on an object in it is called A) Pressure. B) Thrust. C) Buoyancy. D) Drag. Show Answer Correct Answer: C) Buoyancy. 33. Two satellites of masses m and 4m orbit the earth in circular orbits of radii 4r and r respectively.The ratio of their orbital speeds is A) 1. B) $\frac{1}{\sqrt{5}}$. C) $\frac{1}{\sqrt{2}}$. D) $\frac{1}{2}$. Show Answer Correct Answer: D) $\frac{1}{2}$. 34. Which of the following statements is true? (a) g is same at all places on the surface of earth. (b) g has its maximum value at the equator. (c) g is less at the earth's surface than at a height above it or a depth below it. (d) g is greater at the poles than at the equator. A) C. B) A. C) B. D) D. Show Answer Correct Answer: D) D. 35. According to Archimedes principle the upward force experiencing on a body immersed in it will be equal to A) The area of the object in contact with the water. B) The weight of the water displaced. C) The amount of water displaced. D) The volume of water displaced. Show Answer Correct Answer: B) The weight of the water displaced. 36. In Newton's equation for the law of universal gravitation, F = Gm$_{1}$m$_{2}$/r$^{2}$, r is A) The distance between the centers of the masses. B) A universal constant. C) The distance between a planet and the Sun. D) The difference in the two masses. Show Answer Correct Answer: A) The distance between the centers of the masses. 37. A ball weighing 4 kg of density 4000 kgm$^{-3}$ is completely immersed in water of density10$^{3}$ kgm$^{-3}$. What will be the buoyant force acting on it? A) 100 N. B) 10 N. C) 1600 N. D) 16 N. Show Answer Correct Answer: B) 10 N. 38. The gravitational pull is ..... proportional to the mass of object 2 A) Conversely. B) Directly. C) Phonetically. D) Inversely. Show Answer Correct Answer: B) Directly. 39. What prevents planets from drifting off into space and keeps it in the planets in our Solar System? A) Forward Motion. B) Friction. C) Gravity. D) Weight. Show Answer Correct Answer: C) Gravity. 40. A satellite orbits Earth at a certain distance. If the mass of the Earth were to suddenly double, what would happen to the gravitational force acting on the satellite? A) It would double. B) It would quadruple. C) It would halve. D) It would remain unchanged. Show Answer Correct Answer: A) It would double. 41. What is the factors that affect gravitational force A) Mass, distance. B) Speed, distance. C) Momentum, mass. D) None of the above. Show Answer Correct Answer: A) Mass, distance. 42. According to Kepler's first law, what is the shape of the orbit of a planet around the Sun? A) Hyperbola. B) Ellipse. C) Parabola. D) Circle. Show Answer Correct Answer: B) Ellipse. 43. Distance and Gravitational Force are ..... proportional. A) Directly. B) Inversely. C) Not. D) None of the above. Show Answer Correct Answer: B) Inversely. 44. The escape velocity of a body from Earth's surface is 11 km/s. What will be its value from a planet whose radius isdouble but density same as that of Earth? A) 33 km/s. B) 44 km/s. C) 11 km/s. D) 22 km/s. Show Answer Correct Answer: D) 22 km/s. 45. A planet has half the mass and half the radius of the Earth. What is the gravitational field strength at the surface of the planet? The gravitational field strength at the surface of the Earth is 10 N kg$^{-1}$. A) 2.5 N kg$^{-1}$. B) 10 N kg$^{-1}$. C) 5 N kg$^{-1}$. D) 20 N kg$^{-1}$. Show Answer Correct Answer: D) 20 N kg$^{-1}$. 46. Samuel and Arjun are studying the solar system. They are curious about the relationship between the gravitational force and the distance between the center of the Earth and the Moon. Ethan explains it to them. How does he describe it? A) Gravitational force decreases with distance. B) Gravitational force remains constant with distance. C) Gravitational force is unrelated to distance. D) Gravitational force increases with distance. Show Answer Correct Answer: A) Gravitational force decreases with distance. 47. The acceleration due to gravity ..... with depth. A) Decreases. B) Increases. C) Remains same. D) Zero. Show Answer Correct Answer: A) Decreases. 48. What happen to the weight of the object if the mass of the Earth decreases one-half from its original mass without changing its radius? A) Decreases to one half from original weight. B) Does not change. C) Increases double from original weight. D) Decreases to one quarter from original weight. Show Answer Correct Answer: A) Decreases to one half from original weight. 49. What would have the greatest gravitational pull on each other? A) Two small objects close together. B) A large and small object far apart. C) Two large objects close together. D) All choices are correct. Show Answer Correct Answer: C) Two large objects close together. 50. What is the relationship between gravitational force and the masses of two objects? A) Gravitational force decreases with the increase in the masses of two objects. B) Gravitational force is independent of the masses of two objects. C) Gravitational force is directly proportional to the product of the masses of two objects. D) Gravitational force is inversely proportional to the masses of two objects. Show Answer Correct Answer: C) Gravitational force is directly proportional to the product of the masses of two objects. 51. A student drops a bowling ball and an apple from a third-story window. Both objects hit the ground at the same time. From the experiment, the student should conclude that A) The apple weighs more than the bowling ball. B) More air friction is acting on the apple than on the bowling ball. C) Gravity pulls on both objects, causing them to fall at the same time. D) None of the above. Show Answer Correct Answer: C) Gravity pulls on both objects, causing them to fall at the same time. 52. The value of the universal gravitational constant G ..... A) Is a constant everywhere. B) Depends on mass of the bodies. C) Varies with the medium. D) Varies with distance between the bodies. Show Answer Correct Answer: A) Is a constant everywhere. 53. What is the shape of Earth's orbital path around the Sun according to Kepler's laws? A) Nearly circular. B) Perfectly circular. C) Square. D) Highly elliptical. Show Answer Correct Answer: A) Nearly circular. 54. Mass of the object is 20kg then find total weight of the object. A) 100N. B) 200N. C) 50N. D) NONE OF THESE. Show Answer Correct Answer: B) 200N. 55. A direct relationship between two parts of an equation means: A) One part doesn't beat around the bush when it wants to address something sensitive between the two. B) One part tells the other where to stand, how to use their body language, and deliver lines for a scene to elicit the proper reaction from audiences. C) If one increases in value, the other decreases in value. D) If one increases in value, the other increases in value. Show Answer Correct Answer: D) If one increases in value, the other increases in value. 56. The cgs unit of pressure is A) Kg/m$^{2}$. B) N/m$^{2}$. C) G/cm$^{2}$. D) Dyne/cm$^{2}$. Show Answer Correct Answer: D) Dyne/cm$^{2}$. 57. The weight of a body at the centre of the earth is A) Zero. B) Infinite. C) Same as on the surface of earth. D) None of the above. Show Answer Correct Answer: A) Zero. 58. What is Gravitation? A) A force of attraction. B) A force that pulls the things towards it. C) Newton's invention. D) All of the above. Show Answer Correct Answer: D) All of the above. 59. WHAT IS THE UNIT OF FORCE IN MKS SYSTEM A) NEWTON. B) ERG. C) JOULE. D) KG. Show Answer Correct Answer: A) NEWTON. 60. Why do we have a stronger gravitational attraction with Earth than the Sun? A) The sun has a larger mass. B) The Earth has a larger mass. C) We are closer to center of Earth. D) We are closer to center of sun. Show Answer Correct Answer: C) We are closer to center of Earth. ← 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