This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Physics Part I > Class 11 Physics (Part I) Chapter 6 Gravitation – Quiz 12 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 12 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. How does the mass weight of an object vary with respect to mass and radius of the earth. In a hypothetical case, if the diameter of the earth becomes half of its present value and its mass becomes four times of its present value, then how would the weight of any object on the surface of the earth be affected? A) 16m, w. B) M, 16w. C) 16m, 16w. D) M, w. Show Answer Correct Answer: B) M, 16w. 2. What would be the weight of an object on Earth if its mass is 10 kg? A) 98 N. B) 9.8 N. C) 10 N. D) 100 N. Show Answer Correct Answer: A) 98 N. 3. The weight of a body is maximum at: A) The poles. B) The equator. C) The center of the Earth. D) None of the above. Show Answer Correct Answer: A) The poles. 4. If the distance between two objects is tripled, the gravitational force between them will be: A) Reduced to 1/3. B) Reduced to 1/9. C) Increased by 3 times. D) Increased by 9 times. Show Answer Correct Answer: B) Reduced to 1/9. 5. The minimum velocity required to leave the atmosphere is called the ..... A) Orbital velocity. B) Escape velocity. C) Terminal velocity. D) Ejection velocity. Show Answer Correct Answer: B) Escape velocity. 6. As the distance between two objects increases, the force of gravity between them decreases. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 7. Two objects with masses of 10 kg and 20 kg are 5 meters apart. What is the gravitational force between them? (Use $G = 6.674 \times 10^{-11} \, \text{Nm}^2/\text{kg}^2$ A) $5.34 \times 10^{-10} \, \text{N}$. B) $1.33 \times 10^{-10} \, \text{N}$. C) $2.67 \times 10^{-10} \, \text{N}$. D) $6.67 \times 10^{-10} \, \text{N}$. Show Answer Correct Answer: C) $2.67 \times 10^{-10} \, \text{N}$. 8. The gravitational field strength of Earth is ..... A) Uniform far away from the surface and radial close to the surface. B) Uniform close to the surface and radial far away from the surface. C) All the above. D) None of the above. Show Answer Correct Answer: B) Uniform close to the surface and radial far away from the surface. 9. Two factors effecting the strength of gravity between 2 objects are ..... A) Weight and mass. B) Distance and weight. C) Mass and matter. D) Mass and distance. Show Answer Correct Answer: D) Mass and distance. 10. What is $\left(5\times2\right)x$ A) 10 x. B) 2/5 x. C) 25x. D) 5/2x. Show Answer Correct Answer: A) 10 x. 11. Who came up with the Law of Universal Gravitation? A) Albert Einstein. B) Issac Newton. C) Johannes Kepler. D) Max Planck. Show Answer Correct Answer: B) Issac Newton. 12. A 5 kg bowling ball is held an unknown height in the air. If it has 73.5 J of potential energy, what is the height of the ball in the air? A) 3.6 m. B) 2 m. C) 8.2 m. D) 1.5 m. Show Answer Correct Answer: D) 1.5 m. 13. Compared to the Gravitational constant G, coulombs constant k is ..... A) Much larger. B) Much smaller. C) The same. D) Better. Show Answer Correct Answer: A) Much larger. 14. Which of the following data would support the claim that the gravitational force between objects depends on mass? A) An object's weight can change depending where it is on Earth. B) The further a planet is away from the sun, the smaller the gravitational force. C) Gravitational force is stronger on more massive planets. D) A rocket can escape Earth's gravity by traveling at high speed. Show Answer Correct Answer: C) Gravitational force is stronger on more massive planets. 15. Which of the following are characteristics of centripetal force? A) Any force that causes an object to move in a circular path. B) An example would be that gravity keeps the moon in orbit around Earth. C) Center seeking. D) All of the characteristics listed are true. Show Answer Correct Answer: D) All of the characteristics listed are true. 16. The distance between two bodies becomes 6 times more than the usual distance. The the F becomes A) 12 times. B) 1/36 times. C) 36 times. D) 6 times. Show Answer Correct Answer: B) 1/36 times. 17. As distance increases between the sun and an object, gravitational attraction A) Increases. B) Decreases. C) All the above. D) None of the above. Show Answer Correct Answer: B) Decreases. 18. Which of the following best describes the gravitational force between two objects if one object's mass is tripled and the distance between them is doubled? A) 0.75 times the original force. B) 3 times the original force. C) 1.5 times the original force. D) 1.5 times the original force. Show Answer Correct Answer: A) 0.75 times the original force. 19. Two spherical objects have masses of 8000 kg and 1500 kg. Their centers are separated by a distance of 1.5 m. Find the gravitational attraction between them A) 5.4 X 10$^{-4}$ N. B) 3.6 X 10$^{-4}$ N. C) 5.33 N. D) 1.2 X 10$^{7}$ N. Show Answer Correct Answer: B) 3.6 X 10$^{-4}$ N. 20. Gravitational potential due to solid sphere at the centre is ..... A) $-\frac{3GM}{2R}$. B) $\frac{3GM}{2R}$. C) $-\frac{5GM}{2R}$. D) $\frac{5GM}{2R}$. Show Answer Correct Answer: A) $-\frac{3GM}{2R}$. 21. Imagine a new planet having the same density as that of the earth but it is 3 times bigger than the earth in size. If the acceleration due to gravity on the surface of the earth is g and that on the surface of the new planet is 'g', then A) $g'=\frac{g}{9}$. B) G' = 27g. C) G' = 9g. D) G' = 3g. Show Answer Correct Answer: D) G' = 3g. 22. The amount of attraction between two objects which are not in contact with each other is known as the ..... A) Normal force. B) Gravitational force. C) Electrical force. D) Magnetic force. Show Answer Correct Answer: B) Gravitational force. 23. A coin was tossed vertically upward at a speed of 10.0 m/s from the ground. (b) How long did it take the coin to reach its maximum height? A) 1.10 s. B) 1.02 s. C) 1.06 s. D) 1.08 s. Show Answer Correct Answer: B) 1.02 s. 24. On what principle are lactometer and hydrometer based on A) Pascal's law. B) Newton's law. C) Bohr's law. D) Archimedes' principle. Show Answer Correct Answer: D) Archimedes' principle. 25. A satellite S is moving in an elliptical orbit around the earth. The mass of the satellite is very small compared to the mass of earth: A) The acceleration of S is always directed towards the centre of the earth. B) The angular momentum of S about the centre of the earth changes in direction, but its magnitude remains constant. C) The total mechanical energy of S varies periodically with time. D) The linear momentum of S remains constant in magnitude. Show Answer Correct Answer: A) The acceleration of S is always directed towards the centre of the earth. 26. What is the formula for the gravitational force between two masses? A) $F = G \frac{m_1 m_2}{r^2}$. B) $F = \frac{mv^2}{r}$. C) $F = ma$. D) $F = \frac{1}{2}mv^2$. Show Answer Correct Answer: A) $F = G \frac{m_1 m_2}{r^2}$. 27. The value of acceleration due to gravity on the Moon is: A) Equal to that on Earth. B) 6 times that on Earth. C) 1/6th of that on Earth. D) Zero. Show Answer Correct Answer: C) 1/6th of that on Earth. 28. THE SCHOOL BAGS ARE GENERALLY PROVIDED WITH BROAD STRIPS BECAUSE? A) IT WILL SPREAD THE FORCE OF THE BAG OVER THE LARGE AREA OF THE SHOULDER OF THE CHILD PRODUCING LARGE PRESSURE. B) IT WILL SPREAD THE FORCE OF THE BAG OVER THE LARGE AREA OF THE SHOULDER OF THE CHILD PRODUCING LESS PRESSURE. C) IT HAS BECOME A TREND AMONG THE STUDENTS TO CARRY THE BAGS WITH WIDE STRIPS. D) NONE OF THE ABOVE. Show Answer Correct Answer: A) IT WILL SPREAD THE FORCE OF THE BAG OVER THE LARGE AREA OF THE SHOULDER OF THE CHILD PRODUCING LARGE PRESSURE. 29. What happens to the force of gravity is the separation distance is tripled? A) F$_{g}$ increases to 1/3 of the original magnitude. B) F$_{g}$ decreases to 1/9 of the original magnitude. C) F$_{g}$ decreases to 1/3 of the original magnitude. D) F$_{g}$ decreases to 1/6 of the original magnitude. Show Answer Correct Answer: B) F$_{g}$ decreases to 1/9 of the original magnitude. 30. The mass of a satellite influences the velocity at which the satellite orbits a planetary body. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 31. As distance between two objects doubles, the pull of gravity A) Halves. B) Doubles. C) Is 1/4 of the original pull. D) Stays the same. Show Answer Correct Answer: C) Is 1/4 of the original pull. 32. An object on moon surface weighs 66 kg, the weight of same object, on surface of earth will be A) 33 kg. B) 6 kg. C) 11 kg. D) 66 kg. Show Answer Correct Answer: C) 11 kg. 33. A fluid can be ..... A) A liquid or a gas. B) A solid. C) A gas. D) A liquid. Show Answer Correct Answer: A) A liquid or a gas. 34. A measure of how much matter is present in a substance A) Attractive. B) Force. C) Gravity. D) Mass. Show Answer Correct Answer: D) Mass. 35. What is mass in the context of a science experiment? A) The amount of matter in an object. B) The force that gravity exerts on an object. C) The speed at which an object falls. D) The distance between two objects. Show Answer Correct Answer: A) The amount of matter in an object. 36. Planets revolve around the sun in an elliptical orbits with the sun at one focus is ..... A) Gravitational law. B) Newton's 3rd law of motion. C) Kepler's 2nd law. D) Kepler's 1st law. Show Answer Correct Answer: D) Kepler's 1st law. 37. Newton did not discover gravity, for early humans discovered it whenever they fell. What Newton did discover is that gravity A) Tells us about why the universe expands. B) Tells us how to discover new planets. C) Accounts for the existence of black holes. D) Extends throughout the universe. Show Answer Correct Answer: D) Extends throughout the universe. 38. Neutrons were discovered by ..... A) JAMES CHASDWICK. B) RUTHER FORD. C) BOHRS. D) DALTON. Show Answer Correct Answer: A) JAMES CHASDWICK. 39. Consider the Earth to be a homogenous sphere. Scientist A goes deep down in a mine and scientist B goes high up ina balloon. The gravitational field measured by A) A goes on decreasing and that by B goes on increasing. B) B goes on decreasing and that by A goes on increasing. C) Each remain unchanged. D) Each goes on decreasing. Show Answer Correct Answer: D) Each goes on decreasing. 40. In a physics class, Ramana asked his teacher, 'If a ball is thrown up, what will be the value of g?' What would be the teacher's correct response? A) Zero. B) Positive. C) Negative. D) Negligible. Show Answer Correct Answer: B) Positive. 41. What happens to the gravitational force between two objects if the mass of one object is halved, but the distance remains the same? A) Halves. B) Doubles. C) Remains the same. D) Becomes four times smaller. Show Answer Correct Answer: A) Halves. 42. From Kepler's third law, a hypothetical planet that is twice as far from the Sun as Earth should have a period of A) It depends on the planet's mass. B) 2 Earth years. C) 0.5 Earth years. D) More than 2 Earth years. E) 1 Earth year. Show Answer Correct Answer: D) More than 2 Earth years. 43. What will be the weight of an object on the moon if its mass is 15kg? A) 131N$^\circ$. B) 24.5N$^\circ$. C) 23kg. D) 147N$^\circ$. Show Answer Correct Answer: B) 24.5N$^\circ$. 44. The units of acceleration are A) N. B) Kg. C) M/s. D) M/s2. Show Answer Correct Answer: D) M/s2. 45. Gravitational potential at any point inside the solid sphere is ..... A) $-\frac{GM}{2R^3}\left(3R^2-r^2\right)$. B) $\frac{GM}{2R^3}\left(3R^2-r^2\right)$. C) $-\frac{GM}{3R^3}\left(3R^2-r^2\right)$. D) $-\frac{GM}{3R^3}\left(2R^2-r^2\right)$. Show Answer Correct Answer: A) $-\frac{GM}{2R^3}\left(3R^2-r^2\right)$. 46. Mass and Gravitational Force are ..... proportional. A) Directly. B) Inversely. C) Not. D) None of the above. Show Answer Correct Answer: A) Directly. 47. Which of the following best describes the concept of gravitational field strength? A) The force experienced by a unit mass at a point in space. B) The distance between two masses. C) The velocity of an object in free fall. D) The energy required to move a mass in a gravitational field. Show Answer Correct Answer: A) The force experienced by a unit mass at a point in space. 48. A body is raised to a height 'nR' from the surface of the earth of radius r .The ratio of acceleration due to gravity on the surface of the earth to that at the given altitude is A) (n+1)$^{-3}$. B) (n+1). C) (n+1)$^{2}$. D) (n+1)$^{-2}$. Show Answer Correct Answer: C) (n+1)$^{2}$. 49. The formula for Density is A) 2(Density-1gram/cm3). B) Mass/Length. C) Mass/Volume. D) Volume/Mass. Show Answer Correct Answer: C) Mass/Volume. 50. When driving with your friends and the car turns right, what causes you and the other passengers to move to the left? A) Inertia. B) Centripetal Force. C) Centrifugal Force. D) Gravity. Show Answer Correct Answer: A) Inertia. 51. The earth attracts a body of mass 2kg on its surface with a force of A) $2\times6.67\times10^{-11}N$. B) $6.67\times10^{-11^{ }}N$. C) 9.8N. D) 19.6N. Show Answer Correct Answer: D) 19.6N. 52. What is the key takeaway from the lesson on gravitation? A) The speed of light in a vacuum. B) The role of air resistance in falling objects. C) The differences between mass and weight. D) The color of different planets. Show Answer Correct Answer: C) The differences between mass and weight. 53. Which of the following statements is true about free fall? A) The object falls with constant velocity. B) The object falls with constant acceleration. C) The object's mass affects its rate of fall. D) The object falls without the influence of gravity. Show Answer Correct Answer: B) The object falls with constant acceleration. 54. Determine how the gravitational force would change if the distance was tripled. (Hint:use laws of one) A) The force would triple. B) The force would decrease by a factor of 1/9. C) The force would stay constant. D) The force would increase by a factor of 9. Show Answer Correct Answer: B) The force would decrease by a factor of 1/9. 55. GRAVITATIONAL MASS OF A BODY IS PROPOTIONAL TO THE GRAVITATIONAL OF WHAT? A) FIELD. B) INTENSITY. C) FORCE. D) ALL THE ABOVE. Show Answer Correct Answer: D) ALL THE ABOVE. 56. According to Kepler's 3rd law, the square of the time it takes for an object to orbit, T, is directly related to the cube of the distance, r, between the object and what it is orbiting. What this means is that if a satellite moves away from what it is orbiting, A) The larger the constant k is. B) The smaller the constant k is. C) The longer the orbital period is. D) The shorter the orbital period is. Show Answer Correct Answer: C) The longer the orbital period is. 57. Newtton's Law of Gravitation states a mangnitude of an attractive force between two point masses is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.what is it related to? A) Newton's 1st Law of motion. B) Newton's 2nd Law of motion. C) Newton's 3rd Law of motion. D) None of the above. Show Answer Correct Answer: C) Newton's 3rd Law of motion. 58. When is the pressure exerted said to be one pascal? A) When a force of one pound is applied to an area of one square inch. B) When a force of one joule is applied to an area of one square centimeter. C) When a force of one kilogram is applied to an area of one square meter. D) When a force of one newton is applied to an area of one square meter. Show Answer Correct Answer: D) When a force of one newton is applied to an area of one square meter. 59. Value of atmospheric pressure in pascal is? A) 2.013 x 10$^{5}$. B) 5.013 x 10$^{5}$. C) 1.13 x 10$^{5}$. D) 5 x 10$^{5}$. Show Answer Correct Answer: C) 1.13 x 10$^{5}$. 60. A planet and a moon have a gravity force between them of Fg. If the planet was 3x more massive and they were moved 3x further apart. How much gravity force would there be between them? A) 9 Fg. B) 1/27 Fg. C) 1/9 Fg. D) 1/3 Fg. E) 3 Fg. Show Answer Correct Answer: D) 1/3 Fg. ← 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