This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Physics Part I > Class 11 Physics (Part I) Chapter 6 Gravitation – Quiz 10 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 10 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the tendency for one object to pull other objects toward it? A) Attractive. B) Gravitational force. C) Force. D) Interacting objects. Show Answer Correct Answer: A) Attractive. 2. The universal constant of gravitation was found by A) Issac Newton. B) Henry Cavendish. C) Stephen Hawking. D) Johannes Kepler. Show Answer Correct Answer: B) Henry Cavendish. 3. A planet moves fastest during its orbit around the Sun at the when A) It is closest to the sun and gravity has a stronger pull. B) It is farthest from the sun and gravity has a stronger pull. C) It is closest to the sun and gravity has a weak pull. D) It is farthest from the sun and gravity has a weak pull. Show Answer Correct Answer: A) It is closest to the sun and gravity has a stronger pull. 4. Jupiter has about 317 times more mass than Earth. What can you infer from this fact? A) That Jupiter's gravitational force is much weaker than on Earth's gravitational force. B) That Jupiter's gravitational force is much stronger than Earth's gravitational force. C) That Jupiter's and Earth's gravitational forces are equal. D) Mass has no effect on the gravitational force between two objects. Show Answer Correct Answer: B) That Jupiter's gravitational force is much stronger than Earth's gravitational force. 5. What are m1 and m2 in the equation for gravitational force? A) The number of meters of the radius of both objects. B) The malleability of both objects. C) The metal components of both objects. D) The masses of both the objects. Show Answer Correct Answer: D) The masses of both the objects. 6. Newton which law deals with F = ma A) 1st law. B) 3rd law. C) 2nd law. D) Law of Universal Gravitation. Show Answer Correct Answer: C) 2nd law. 7. Formula for getting the weight, or gravitational force, of objects near the Earth's surface. A) W = mg/2. B) W = mg. C) W = m/g. D) W =mg$^{2}$. Show Answer Correct Answer: B) W = mg. 8. The Alpha Centauri system is the closest star system to Earth and contains two primary stars, Alpha Centauri A (1.1 x 10$^{30}$ kg) and Alpha Centauri B (0.91 x 10$^{30 }$kg), orbiting each other. The two stars are 3.5 x 10$^{12 }$m apart. What are the gravitational forces between them? A) 6.77 x 10$^{21}$ N. B) 4.18 x 10$^{22}$ N. C) 2.50 x 10$^{19}$ N. D) 5.35 x 10$^{24 }$N. Show Answer Correct Answer: D) 5.35 x 10$^{24 }$N. 9. According to Newton's law of universal gravitation, the gravitational force between two objects is affected by: A) Mass and distance. B) Charge and distance. C) Mass and time. D) Velocity and acceleration. Show Answer Correct Answer: A) Mass and distance. 10. Why does a sock stick to a shirt after being in the dryer? A) Both are positively charged. B) One is neutral. C) One is negative and one is positive. D) Both are positive. Show Answer Correct Answer: C) One is negative and one is positive. 11. A satellite is revolving around the sun in a circular orbit with uniform velocity v. If the gravitational force suddenly disappears, the velocity of the satellite will be: A) Zero. B) Infinity. C) 2 V. D) V. Show Answer Correct Answer: D) V. 12. A stone is thrown upward with an initial speed of 15 m/s. How long does it take for the stone to return to the thrower? A) 3.0 s. B) 1.5 s. C) 2.0 s. D) 3.5. Show Answer Correct Answer: A) 3.0 s. 13. Newton's law of gravitation is valid (a) on the earth only (b) on the moon only (c) in the laboratory only (d) everywhere A) D. B) C. C) A. D) B. Show Answer Correct Answer: A) D. 14. A rocket ship is sitting on the surface of a planet with a mass of 1 x 10$^{27}$ kg and a radius of 6.67 x 10$^{12}$ m. What is the planet's escape velocity? A) 14.14 m/s. B) 50 m/s. C) 141.4 m/s. D) 10 m/s. E) 100 m/s. Show Answer Correct Answer: C) 141.4 m/s. 15. Planets revolve around the sun in elliptical orbits A) Law of Periods. B) Law of orbits. C) Law of Areas. D) None of the above. Show Answer Correct Answer: B) Law of orbits. 16. The first and second stage of the rocket provides ..... respectively. A) Horizontal and vertical velocity. B) Vertical and Horizontal velocity. C) Vertical and linear velocity. D) Linear and Horizontal velocity. Show Answer Correct Answer: B) Vertical and Horizontal velocity. 17. Picking up a rock requires less effort on the Moon than onEarth. Why? A) The mass of the rock on the Moon is less. B) The acceleration due to gravity 'g' on the moon is greater than on the Earth. C) The acceleration due to gravity 'g' on the Moon is smaller than on the Earth. D) None of the above. Show Answer Correct Answer: C) The acceleration due to gravity 'g' on the Moon is smaller than on the Earth. 18. A basketball with weight of 19.6N$^\circ$ is dropped from a skyscraper. It falls for 6 seconds. Find the momentum of the ball by which it strikes. A) 117.6kg m/s$^{2}$. B) 39.2kg m/s$^{2}$. C) 49kg m/s$^{2}$. D) 108.6kg m/s$^{2}$. Show Answer Correct Answer: A) 117.6kg m/s$^{2}$. 19. The value of universal gravitational constant G depends on A) The nature of material of two bodies. B) The heat content of two bodies. C) The acceleration of two bodies. D) None of these. Show Answer Correct Answer: D) None of these. 20. What does Newton's Law of Gravitation state about the force between two masses? A) It is inversely proportional to the square of the distance between them. B) It is directly proportional to the square of the distance between them. C) It is directly proportional to the distance between them. D) It is inversely proportional to the product of their masses. Show Answer Correct Answer: A) It is inversely proportional to the square of the distance between them. 21. What is the SI unit of G? A) Nm$^{2}$/kg. B) Nm$^{2}$/kg$^{2}$. C) Unitless. D) None. Show Answer Correct Answer: B) Nm$^{2}$/kg$^{2}$. 22. A person would weigh more on Jupiter than on the Earth because ..... A) Jupiter has more mass, and therefore more gravity. B) Jupiter has less mass, and therefore more gravity. C) Jupiter has more mass, and therefore less gravity. D) Jupiter has less mass and therefore less gravity. Show Answer Correct Answer: A) Jupiter has more mass, and therefore more gravity. 23. According to Kepler's laws, the paths of the planets are A) Ellipses. B) Earth centered. C) Circle. D) Parabolas. Show Answer Correct Answer: A) Ellipses. 24. An astronaut on the Moon drops a hammer and a feather from the same height. Which statement is true about their fall? A) The hammer falls faster due to its mass. B) The feather falls faster due to air resistance. C) Both fall at the same rate due to gravity. D) The hammer falls slower due to its shape. Show Answer Correct Answer: C) Both fall at the same rate due to gravity. 25. When Ramana drops a ball from a certain height, the value of g will be? A) Negative. B) Negligible. C) Positive. D) Zero. Show Answer Correct Answer: C) Positive. 26. The amount of gravitational attraction between the Moon and an astronaut standing on its surface depends on the astronaut's distance from the center of the Moon and the astronaut's A) Height. B) Shape. C) Mass. D) None of the above. Show Answer Correct Answer: C) Mass. 27. IF THRUST IS 152N AREA ON WHICH THRUST IS 8m$^{2}$ THEN PRESSURE IS ..... N/m$^{2}$ A) 19. B) 17. C) 16. D) 18. Show Answer Correct Answer: A) 19. 28. If the original gravitational force between two objects is 100 N and both objects double in mass, what would the new force be? A) 100 N. B) 400 N. C) 500 N. D) 200 N. Show Answer Correct Answer: B) 400 N. 29. The "Law of Harmonies" is which of Kepler's Laws? A) 1st. B) 2nd. C) 4th. D) 3rd. Show Answer Correct Answer: D) 3rd. 30. SP2.eDoubling the distance between two objects ..... A) Will half the force of gravity. B) Will double the force of gravity. C) Will quadruple the force of gravity. D) Will quarter the force of gravity. Show Answer Correct Answer: D) Will quarter the force of gravity. 31. April and Nora are conducting an experiment with two spheres. Explain how the gravitational force between the spheres would change if both their masses are tripled and the distance between them is also tripled. A) The force is reduced to one-third. B) The force is increased nine times. C) The force remains the same. D) The force is tripled. Show Answer Correct Answer: C) The force remains the same. 32. Which of the following experiments can demonstrate the concept of gravity? A) Dropping two objects of different masses from the same height. B) Heating a metal rod and observing expansion. C) Mixing vinegar and baking soda to produce gas. D) Observing the refraction of light through a prism. Show Answer Correct Answer: A) Dropping two objects of different masses from the same height. 33. For a planet revolving around the Sun, the time period of the planet depends on A) Mass of the Sun. B) Mass of the planet. C) Distance between the planet and the Sun. D) Both A and C. Show Answer Correct Answer: D) Both A and C. 34. The relative density of an object is determined comparing its density with that of A) Water. B) Iron. C) Air. D) Wood. Show Answer Correct Answer: A) Water. 35. I man who weighs 1000N on the surface of the earth will weigh how much at twice the distance in the atmosphere. A) 4000N. B) 500 N. C) 250 N. D) 2000 N. Show Answer Correct Answer: C) 250 N. 36. If you halve the distance between two masses of 250 kg each, what happens to the gravitational force? A) F is multiplied by 4. B) F stays the same. C) F is decreased by a factor of 4. D) F is multiplied by 2. Show Answer Correct Answer: A) F is multiplied by 4. 37. What real-world application relies on Newton's Law of Gravitation? A) Calculating chemical reactions. B) Measuring sound waves. C) Predicting satellite trajectories. D) Designing electrical circuits. Show Answer Correct Answer: C) Predicting satellite trajectories. 38. What is the total energy of a satellite of mass m orbiting the Earth at a distance equal to 2 times the Earth's radius above its surface? A) $E=-\frac{GMm}{2R_E}$. B) $E=-\frac{GMm}{6R_E}$. C) $E=-\frac{GMm}{4R_E}$. D) $E=-\frac{2GMm}{R_E}$. E) $E=-\frac{4GMm}{R_E}$. Show Answer Correct Answer: B) $E=-\frac{GMm}{6R_E}$. 39. A satellite A of mass m is at a distance r from the surface of the earth. Another satellite B of mass 2 m is at a distance of 2 r from the earth's surface. Their time periods are in the ratio of A) $1:2\sqrt{2}$. B) 1:16. C) 1:2. D) 1:32. Show Answer Correct Answer: A) $1:2\sqrt{2}$. 40. How does the orbital speed of a planet change as it moves closer to the Sun according to Kepler's laws? A) The speed remains constant. B) The speed increases. C) The speed decreases. D) The speed becomes zero. Show Answer Correct Answer: B) The speed increases. 41. If a big stone and a small stone when dropped from a height, then both will strike the ground at the same time bcoz: A) The value of g does not depend of mass of object. B) The value of g depends on mass of object. C) Both a and b. D) None. Show Answer Correct Answer: A) The value of g does not depend of mass of object. 42. The areal velocity of planetary motion is A) A constant. B) Not a constant. C) Varies with time. D) None of these. Show Answer Correct Answer: A) A constant. 43. Who created the Universal Law of Gravitation? A) Kepler. B) Newton. C) Galileo. D) Copernicus. Show Answer Correct Answer: B) Newton. 44. Who proposed Earth centered model? A) Ptolemy. B) Copernicus. C) Kepler. D) Tycho Brahe. Show Answer Correct Answer: A) Ptolemy. 45. Which experiment would best demonstrate the concept of universal gravitation? A) Dropping two different masses from the same height and observing their fall. B) Measuring the force between two suspended masses in a vacuum chamber. C) Observing the orbit of a satellite around Earth. D) Calculating the weight of an object on different planets. Show Answer Correct Answer: B) Measuring the force between two suspended masses in a vacuum chamber. 46. Weight of an object on moon is ..... of the weight on earth A) 1/6th. B) 1/5th. C) Both a and b. D) None. Show Answer Correct Answer: A) 1/6th. 47. Find the force of gravity (Fg) for two objects with:m1 = 100 kgm2 = 1000 kgd = 500 m A) 2.67 x 10$^{-11}$ N. B) 6.67 x 10$^{-11}$ N. C) 0.4 N. D) 1.3 x 10$^{-8}$ N. Show Answer Correct Answer: A) 2.67 x 10$^{-11}$ N. 48. The value of g is maximum on earth at. A) Poles. B) Equator. C) Both. D) None. Show Answer Correct Answer: A) Poles. 49. The gravitational force between two bodies is decreased by 36% when the distance between them is increased by 3m. The initial distance between them is A) 6m. B) 15m. C) 12m. D) 9m. Show Answer Correct Answer: C) 12m. 50. In the equation for gravitational potential energy, 'g' stands for ..... A) Gravity. B) Gravitational field strength. C) Energy. D) Grams. Show Answer Correct Answer: B) Gravitational field strength. 51. What type of interaction is a gravitational force? A) Attractive and repulsive. B) Repulsive. C) Attractive. D) No interaction exist. Show Answer Correct Answer: C) Attractive. 52. Gravity attracts all objects towards one another. A) False. B) True. C) It depends. D) None of the above. Show Answer Correct Answer: B) True. 53. The kinetic energy of an orbiting sattelite is given by ..... A) $\frac{1}{2}\\frac{GMm}{\left(R+h\right)}$. B) $\frac{1}{2}\\frac{GMm}{\left(R+h\right)^2}$. C) $\frac{1}{2}\\frac{GMm}{h^2}$. D) None of the above. Show Answer Correct Answer: A) $\frac{1}{2}\\frac{GMm}{\left(R+h\right)}$. 54. Which of the following law is not Kepler's law of planetary motion A) Harmonic law. B) Law of orbit. C) Law of periods. D) Law of motion. Show Answer Correct Answer: D) Law of motion. 55. A line drawn from a planet to the Sun always sweeps over equal areas in equal intervals of time, when the planet moves further from the sun, the planet will move A) Faster. B) Slower. C) Constant at every point. D) None of the above. Show Answer Correct Answer: B) Slower. 56. $Fg=\frac{Gm_1m_2}{d^2}$ A) $7.4\times10^{-12}$. B) 0.111. C) $2.22\times10^{-11}$. D) $1.48\times10^{-11}$. Show Answer Correct Answer: A) $7.4\times10^{-12}$. 57. School bags have a broader base to reduce A) Pressure. B) Weight. C) Normal reaction. D) Air resistance. Show Answer Correct Answer: A) Pressure. 58. In a binary star system, if the distance between the two stars is reduced to one-third, how does the gravitational force between them change? A) It becomes three times stronger. B) It becomes one-third as strong. C) It becomes nine times stronger. D) It remains the same. Show Answer Correct Answer: C) It becomes nine times stronger. 59. Kepler's third law states A) The orbit of a planet around the sun is an ellipse, with the sun at one focus. B) The semimajor axis is equal to the planet's average distance from the sun. C) The square of the orbital period of a planet is proportional to its orbital radius. D) None of these answers is correct. Show Answer Correct Answer: C) The square of the orbital period of a planet is proportional to its orbital radius. 60. Predict the effect on the gravitational force if the distance between two orbiting planets is reduced by a factor of 3. A) The force decreases by a factor of 3. B) The force increases by a factor of 9. C) The force increases by a factor of 3. D) The force decreases by a factor of 9. Show Answer Correct Answer: B) The force increases by a factor of 9. ← 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