This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 6 Gravitation – Quiz 23 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 23 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Every object with mass is gravitationally attracted to each other object with mass in the entire universe. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 2. If two objects increase their distance, it ..... the gravitational pull between the two objects A) Increases. B) Decreases. C) Has no effect on. D) Eliminates. Show Answer Correct Answer: B) Decreases. 3. The gravitational force A) Can be attractive or repulsive. B) Is tangential to the orbital path. C) Is always repulsive. D) Is always attractive. Show Answer Correct Answer: D) Is always attractive. 4. According to Kepler's laws, an imaginary line from the Sun to a planet A) Remains a constant length through the entire orbit of that planet. B) Sweeps out larger areas the greater the planet's distance from the Sun than it would in the same time interval when closest to the Sun. C) Sweeps out larger areas when the planet is closest to the Sun than it would in the same time interval when farthest from the Sun. D) Sweeps out equal areas in equal time periods. Show Answer Correct Answer: D) Sweeps out equal areas in equal time periods. 5. Gravitational potential energy at the surface of Earth is A) Zero. B) Positive. C) Negative. D) Infinite. Show Answer Correct Answer: C) Negative. 6. The forces of gravity ..... with altitude. A) Increases. B) Decreases. C) All the above. D) None of the above. Show Answer Correct Answer: B) Decreases. 7. The proportionality constant in Newton's law of universal gravitation A) Gravitational constant. B) The Coulomb constant. C) The Planck constant. D) The speed of light. Show Answer Correct Answer: A) Gravitational constant. 8. Which of the following best describes the concept of gravitational force according to Newton's Law of Gravitation? A) It is a force that acts only on objects with a charge. B) It is a force that acts between any two masses. C) It is a force that acts only at the surface of the Earth. D) It is a force that acts only on objects in motion. Show Answer Correct Answer: B) It is a force that acts between any two masses. 9. An artificial satellite moving in a circular orbit around the earth has a total (kinetic + potential) energy Eo. Its potential energy is: A) E$_{0}$. B) 2E$_{0}$. C) 1.5 E$_{0}$. D) -E$_{0}$. Show Answer Correct Answer: B) 2E$_{0}$. 10. Which of the following is the evidence to show that there must be a force acting on earth and directed towards the sun: A) Deviation of the falling bodies towards east. B) Revolution of earth around the sun. C) Phenomena of day and night. D) Apparent motion of sun round the earth. Show Answer Correct Answer: B) Revolution of earth around the sun. 11. ..... of a body is the quantity of matter contained in it. A) VELOCITY. B) GRAVITY. C) WEIGHT. D) MASS. Show Answer Correct Answer: D) MASS. 12. If the gravitational attraction of the Earth suddenly disappears, which of the following statement will be true? A) Weight of the body will become 0, mass remains the same. B) Weight of the body remains same, mass becomes 0. C) Both mass and weight becomes 0. D) Neither mass nor weight becomes 0. Show Answer Correct Answer: A) Weight of the body will become 0, mass remains the same. 13. Planets move faster when they are closer to the Sun and slower when they are farther away A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 14. What is the tendency for one object to pull other objects toward it? A) Attractive. B) Force. C) Gravitational force. D) Interacting objects. Show Answer Correct Answer: A) Attractive. 15. The gravitational forces cause A) Tides. B) Motion of moon. C) None of these. D) Both a and b. Show Answer Correct Answer: D) Both a and b. 16. The universal constant of gravitation was found by A) Henry Cavendish. B) Johannes Kepler. C) Issac Newton. D) Stephen Hawking. Show Answer Correct Answer: A) Henry Cavendish. 17. 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. 18. If the sun's mass is 2.0 x 10$^{30}$ kg, and its radius is 7.0 x 10$^{8}$ m, what is the strength of its gravitational field, "g" ? A) 9.8 m/s$^{2}$. B) 272 m/s$^{2}$. C) 27.2 m/s$^{2}$. D) 200 m/s$^{2}$. Show Answer Correct Answer: B) 272 m/s$^{2}$. 19. 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. 20. 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. 21. Newton which law deals with F = ma A) 3rd law. B) 2nd law. C) 1st law. D) Law of Universal Gravitation. Show Answer Correct Answer: B) 2nd law. 22. Formula for getting the weight, or gravitational force, of objects near the Earth's surface. A) W = m/g. B) W =mg$^{2}$. C) W = mg/2. D) W = mg. Show Answer Correct Answer: D) W = mg. 23. 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) 4.18 x 10$^{22}$ N. B) 5.35 x 10$^{24 }$N. C) 2.50 x 10$^{19}$ N. D) 6.77 x 10$^{21}$ N. Show Answer Correct Answer: B) 5.35 x 10$^{24 }$N. 24. 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. 25. 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. ← PreviousNext →Related 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 8Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 9Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books