This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Physics Part I > Class 11 Physics (Part I) Chapter 6 Gravitation – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 5 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Tides in the ocean is caused by ..... A) Gravitational pull of the moon on earth. B) Gravitational pull of the sun on earth. C) Gravitational pull of earth on the sun and the moon. D) Both options 1 and 2. Show Answer Correct Answer: D) Both options 1 and 2. 2. Which of the following best describes the motion of planets around the sun? A) Linear Motion. B) Circular Motion. C) Elliptical Motion. D) Random Motion. Show Answer Correct Answer: C) Elliptical Motion. 3. What's the mass of a person with 49N$^\circ$ weight on Earth? A) 9.8N$^\circ$. B) 12.25kg. C) 7kg. D) 5kg. Show Answer Correct Answer: D) 5kg. 4. Double the product of the masses of two objects A) 4 times weaker gravity force. B) 2 times weaker gravity force. C) 4 times stronger gravity force. D) 2 times stronger gravity force. Show Answer Correct Answer: D) 2 times stronger gravity force. 5. Which of the following would increase the gravitational force between two objects? A) Increasing the distance between them. B) Decreasing the mass of one object. C) Increasing the mass of both objects. D) Placing them in a vacuum. Show Answer Correct Answer: C) Increasing the mass of both objects. 6. If Mass 1 is doubled (2m) and Mass 2 is tripled (3m) it will ..... A) Will triple the force of gravity. B) Will double the force of gravity. C) Will reduce the force of gravity by a factor of six. D) Will multiply the force of gravity by a factor of six. Show Answer Correct Answer: D) Will multiply the force of gravity by a factor of six. 7. What is weight in the context of a physics class? 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: B) The force that gravity exerts on an object. 8. Force of gravity on mass =? A) Force. B) Mass. C) Gravitational force. D) Weight. Show Answer Correct Answer: D) Weight. 9. Newton's Universal Law of Gravitation states that the gravitational force between two objects is directly proportional to the product of masses of the two objects and inversely proportional to A) Cube of the distance between the centres of the two objects. B) Square of the distance between the centres of the two objects. C) Square of the product of the body's radii. D) Distance between the two objects. Show Answer Correct Answer: B) Square of the distance between the centres of the two objects. 10. Mrs. Grande says that when a ball of weight 42g is swirled with a string in circular motion and the string breaks, the ball will move in a certain path. Which path will it move in? A) A tangible path to the circle. B) A tangential path to the circle. C) A direction perpendicular to the person swirling the ball. D) It is random and cannot be predicted. Show Answer Correct Answer: B) A tangential path to the circle. 11. According to the Newton's Universal Law of Gravitation, the force of gravity between two objects is directly proportional to A) The distance between the objects. B) The square of the distance between the objects. C) The product of the masses of the objects. D) The gravitational constant. Show Answer Correct Answer: C) The product of the masses of the objects. 12. The gravitational force between two objects is F. If masses of both objects are halved without changing the distance between them, then the gravitational force would become(a) F/4(b) F/2(c) F(d) 2F A) F. B) F/4. C) F/2. D) 2F. Show Answer Correct Answer: B) F/4. 13. Why does weight change depending on the location? A) The mass of an object changes. B) The volume of the object changes. C) The gravitational pull changes. D) Temperature changes. Show Answer Correct Answer: C) The gravitational pull changes. 14. Two sphere of mass m and M are situated in air and the gravitational force between them is F. The space around the masses is now filled with a liquid of specific gravity 3. The gravitational force will now be A) $\frac{F}{9}$. B) F. C) 3F. D) $\frac{F}{3}$. Show Answer Correct Answer: B) F. 15. The ..... of the time period ofrevolution of a planet around the Sun isproportional to the ..... of the semimajoraxis of the ellipse traced by the planet. A) Cube, Cube. B) Square, Cube. C) Square, cube. D) Cube, Square. Show Answer Correct Answer: C) Square, cube. 16. The definition of gravitational field strength is: A) The region of space surrounding a body where other bodies will feel an repulsive force due to it. B) The region of space surrounding a body where other bodies will feel an attractive force due to it. C) The region of space surrounding a charge where other charges will feel an attractive force due to it. D) The region of space surrounding a charge where other charges will feel an repulsive force due to it. Show Answer Correct Answer: B) The region of space surrounding a body where other bodies will feel an attractive force due to it. 17. The distance between two particles is x and the gravitational force between them is F. If x is quadrupled, the gravitational force between them will be A) 2F. B) F/16. C) 16F. D) 4F. Show Answer Correct Answer: B) F/16. 18. What effect does increasing the distance between the two objects do to the gravitational force? A) It decreases. B) The distance between two objects has no effect on the gravitational force. C) It stays the same. D) It increases. Show Answer Correct Answer: A) It decreases. 19. How can you explain that we have a stronger gravitational attraction with Earth than the Sun? A) The sun has a larger mass. B) The sun has a smaller mass. C) Closer to center of sun. D) Closer to center of Earth. Show Answer Correct Answer: D) Closer to center of Earth. 20. Gravitational force is a force of A) Repulsion. B) Attraction. C) All the above. D) None of the above. Show Answer Correct Answer: B) Attraction. 21. Two spherical objects have masses of 7000 kg and 1700 kg. Their centers are separated by a distance of 1.5m. Find the gravitational attraction between them. A) 3.53 x 10$^{-4}$. B) 3.53 x 10$^{-11}$. C) 4.21 x 10$^{-8}$. D) 4.36 x 10$^{-8}$. Show Answer Correct Answer: A) 3.53 x 10$^{-4}$. 22. Which of the following best describes the relationship between gravitational force and the distance between two objects according to Newton's law of universal gravitation? A) The force is directly proportional to the square of the distance. B) The force is inversely proportional to the distance. C) The force is directly proportional to the distance. D) The force is inversely proportional to the square of the distance. Show Answer Correct Answer: D) The force is inversely proportional to the square of the distance. 23. A satellite orbits Earth in a circular path with a radius of 7000 km. If the gravitational force acting on the satellite is 5000 N, what is the mass of the satellite? A) 1000 kg. B) 1500 kg. C) 2000 kg. D) 500 kg. Show Answer Correct Answer: A) 1000 kg. 24. Orbital velocity near surface of the earth is ..... A) 7.98 m/s. B) 7.88 m/s. C) 7.88 km/s. D) 7.98 km/s. Show Answer Correct Answer: D) 7.98 km/s. 25. Earth's mass is approximately 81 times the mass of the Moon. If Earth exerts a gravitational force of magnitude F on the Moon, the magnitude of the gravitational force of the Moon on Earth is A) 9F. B) F. C) 81F. D) F/81. Show Answer Correct Answer: B) F. 26. Which of the following is true about gravitational force? A) It is independent of the masses of objects. B) It is a contact force. C) It acts at a distance without direct contact. D) It depends only on the mass of one object. Show Answer Correct Answer: C) It acts at a distance without direct contact. 27. The force of gravity on a 50 kg woman is 500 N. The woman also exerts a gravitational force on the Earth. How large a force is this? A) 245 N. B) 980 N. C) 500 N. D) 0 N. Show Answer Correct Answer: C) 500 N. 28. An object with a mass of 48 kg measured on Earth is taken to the Moon. What is the mass of the object on the Moon's surface if the acceleration due to gravity on Moon is one-sixth of that on Earth? A) 48 kg. B) 8 kg. C) 288 kg. D) 480 kg. Show Answer Correct Answer: A) 48 kg. 29. Kepler's First Law states that planets move in elliptical orbits with the Sun at one focus. Which of the following best explains why this is significant? A) It indicated that the Sun is at the center of the universe.TagsDOK Level 2:Skill/Concept. B) It demonstrated that the speed of planets is constant. C) It disproved the geocentric model of the universe. D) It showed that planets move in perfect circles. Show Answer Correct Answer: C) It disproved the geocentric model of the universe. 30. Two particles are placed at some distance. If the mass of each of the two particles is tripled, keeping the distance between them unchanged, the value of gravitational force between them will be A) 6 times. B) 1/9 times. C) 9 times. D) 1/6 times. Show Answer Correct Answer: C) 9 times. 31. A man who weighs 1000N on the surface of the earth will weigh how much at twice the distance in the atmosphere. A) 250 N. B) 4000N. C) 2000 N. D) 500 N. Show Answer Correct Answer: A) 250 N. 32. AsAt the centre of earth, a body has a centre of mass but no centre of gravity. Reason:Acceleration due to gravity at the centre of the earth is zero. A) ) Both assertion and reason are true and reason is the correct explanation of assertion. B) Both assertion and reason are true but reason is not the correct explanation of assertion. C) Assertion is true but reason is false. D) Both Assertion and Reason are false. Show Answer Correct Answer: A) ) Both assertion and reason are true and reason is the correct explanation of assertion. 33. If Mass 1 is doubled (2m) and the distance between the two masses is doubled (2r) it will ..... A) Will reduce the force of gravity by a factor of four. B) Will multiply the force of gravity by a factor of four. C) Will double the force of gravity. D) Will halve the force of gravity. Show Answer Correct Answer: D) Will halve the force of gravity. 34. A force of attraction exists between all the objects in the universe. A) Newton's law of gravitation. B) Kepler's first law. C) Kepler's third law. D) Kepler's second law. Show Answer Correct Answer: A) Newton's law of gravitation. 35. Force acting normally on a surface is called: A) Pressure. B) Thrust. C) Both a and b. D) None. Show Answer Correct Answer: B) Thrust. 36. The value of g is ..... at the center of earth A) Zero. B) Cant be determined. C) Not defined. D) 1. Show Answer Correct Answer: A) Zero. 37. Two spherical objects have masses of 400 kg and 50 kg. Their centers are separated by a distance of 15 m. Find the change in the gravitational attraction Force between them if the first mass changes to 800 kg and the other mass and distance do not change. A) It does not change. B) It increases by a factor of 2 times stronger. C) It increases by a factor of 1/2 times stronger. D) It decreases by a factor of 1/2 as weak. Show Answer Correct Answer: B) It increases by a factor of 2 times stronger. 38. What is uniform circular motion? A) Motion in a straight line. B) Motion with increasing speed. C) Motion at varying speeds in a circle. D) Motion at constant speed in a circular path. Show Answer Correct Answer: D) Motion at constant speed in a circular path. 39. What is the formula for Newton's Law of Gravitation? A) $F = \frac{mv^2}{r}$. B) $F = G \frac{m_1 m_2}{r^2}$. C) $E = mc^2$. D) $F = ma$. Show Answer Correct Answer: B) $F = G \frac{m_1 m_2}{r^2}$. 40. Kepler's third law states that the square of the ratio of the periods of any two planets is equal to the cube of the ratio of their distances from each other A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 41. The gravitational potential energy of a system consisting of two equal point masses separated by a fixed distance is $G_1$ $G_2$ $\frac{G_1}{G_2}$ A) 2. B) 3. C) 1. D) 4. Show Answer Correct Answer: C) 1. 42. The weight of a body at the surface of earth is 40 N. Its weight at the centre of earth will be A) Infinite. B) Zero. C) Unpredictable. D) 40 N. Show Answer Correct Answer: B) Zero. 43. Which scientist explained how planets speed up and slow down depending on their position in the orbit? A) Bruno. B) Kepler. C) Brahe. D) C0pernicus. Show Answer Correct Answer: B) Kepler. 44. If you were standing on the moon, and then the moon was suddenly hollowed out so that the mass of the moon decreases while keeping the same size and radius, then what effect occurs to your weight (Remember:Weight is the gravitational force ..... )? A) My weight would not change. B) My weight would increase. C) My weight would decrease. D) None of the above. Show Answer Correct Answer: C) My weight would decrease. 45. When do gravitational forces exist between two objects? A) They only exist between microscopic objects. B) They are always present between any two objects. C) Gravitational forces only act on objects falling on Earth. D) They only exist for objects in space. Show Answer Correct Answer: B) They are always present between any two objects. 46. Calculate the gravitational force between two objects with a mass of 50 kg that are 2 m apart. A) 4.2x10$^{-8}$N. B) 2.2x10$^{-8}$N. C) 4.2x10$^{-14}$N. D) 2.2x10$^{14}$N. Show Answer Correct Answer: A) 4.2x10$^{-8}$N. 47. The value of g be ..... everywhere. A) Different. B) Same. C) All the above. D) None of the above. Show Answer Correct Answer: A) Different. 48. What happens to the gravitational force if the mass of one object is tripled? A) The gravitational force triples. B) The gravitational force doubles. C) The gravitational force is reduced to one-third. D) The gravitational force remains unchanged. Show Answer Correct Answer: A) The gravitational force triples. 49. In a frictionless room, what would happen if two blocks were placed on the floor? A) The blocks would move away from each other. B) The blocks would rotate around each other. C) The blocks would move towards each other. D) The blocks would remain stationary. Show Answer Correct Answer: C) The blocks would move towards each other. 50. For over 1, 000 years, the church supported this theory- A) Geocentric. B) Heliocentric. C) All the above. D) None of the above. Show Answer Correct Answer: A) Geocentric. 51. As the mass of an object increases, the gravitational pull of the object ..... A) Stays the same. B) Decreases. C) IncreasesTagsNGSS.HS-PS2-4. D) None of the above. Show Answer Correct Answer: C) IncreasesTagsNGSS.HS-PS2-4. 52. What is the role of the gravitational constant (G) in Newton's Law of Gravitation? A) It defines the speed of light in a vacuum. B) It measures the mass of the objects involved. C) It determines the strength of the gravitational force. D) It calculates the distance between two objects. Show Answer Correct Answer: C) It determines the strength of the gravitational force. 53. What is the importance of the universal law of gravitation? A) It explains the motion of objects on the earth. B) It explains the motion of objects in space. C) It helps in designing ships and submarines. D) All of the above. Show Answer Correct Answer: D) All of the above. 54. What is the relationship between mass of object and distance between objects ..... A) Mass increase, gravitational force increase. B) Mass increase, gravitational force decrease. C) Mass decrease, gravitational force increase. D) None of the above. Show Answer Correct Answer: A) Mass increase, gravitational force increase. 55. Two objects are attracted to each other with 1000 N of gravitational force.What would the force between them be if the distance between them were 12x smaller? A) 12, 000 N. B) 36, 000 N. C) 144, 000 N. D) 6, 000 N. Show Answer Correct Answer: C) 144, 000 N. 56. Any object with mass is surrounded by a gravitational field. A) True. B) Fallse. C) False. D) Tru. Show Answer Correct Answer: A) True. 57. THE ACCELARATION DUE TO GRAVITY VARIES ON EARTH WITH A) DISTANCE FROM EQUATOR. B) ALTITUDE. C) MASS OF AN OBJECT. D) (A) AND (B). Show Answer Correct Answer: D) (A) AND (B). 58. Two spherical objects have masses of 50 kg and 50 kg. Their centers are separated by a radius distance of 20 m. Find the change in the gravitational attraction Force between them if the radius distance doubles in length, and the one mass doubles while the other mass doesn't change. A) It does not change the overall force of gravitation. B) It decreases by a factor of 1/2. C) It decreases by a factor of 1/4. D) It increases by a factor of 4. Show Answer Correct Answer: B) It decreases by a factor of 1/2. 59. What happens to the magnitude of force when one mass is doubled and the other mass is tripled? A) The force increases by a factor of 6. B) The force is doubled. C) The force decreases by 1/6. D) The force is tripled. Show Answer Correct Answer: A) The force increases by a factor of 6. 60. If the distance between two objects is halved, what happens to the gravitational force between them according to Newton's law of universal gravitation? A) It halves. B) It doubles. C) It quadruples. D) It remains the same. Show Answer Correct Answer: C) It quadruples. ← 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 6Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 7Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 8Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books