This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 6 Gravitation – Quiz 34 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 34 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the force that pulls the Moon towards the Earth? A) Centripetal force. B) Frictional force. C) Torsional force. D) Gravitational force. Show Answer Correct Answer: D) Gravitational force. 2. 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. 3. The Force of gravity is INVERSELY proportional to ..... A) Mass. B) Weight. C) Distance. D) Time. Show Answer Correct Answer: C) Distance. 4. How does Fg change if one of the masses doubles? (Hint:Use Laws of Ones) A) The force also doubles. B) The force is reduced by half. C) The force stays the same. D) The force is increased by a factor of 4. Show Answer Correct Answer: A) The force also doubles. 5. IF WEIGHT OF AN OBJECT ON EARTH IS 42KG THEN WEIGHT OF THE OBJECT ON MOON IS ..... A) 0KG. B) 5KG. C) 6KG. D) 7KG. Show Answer Correct Answer: D) 7KG. 6. The escape velocity on Earth is approximately A) 7 km/s. B) 5 km/s. C) 11.2 km/s. D) 15 km/s. Show Answer Correct Answer: C) 11.2 km/s. 7. 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. 8. Oliver and Harper are discussing about gravity. Oliver says that the force of gravity is directly proportional to which of the following? A) Mass. B) Weight. C) Distance. D) Time. Show Answer Correct Answer: A) Mass. 9. A measure of the separation of the foci of an ellipse A) Eccentricity. B) Circumference. C) Inclination. D) Perimeter. Show Answer Correct Answer: A) Eccentricity. 10. 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. 11. What is the gravitational force between two identical 50, 000 kg asteroids whose centers of mass are separated by 1000 m? A) 2500 N. B) 3.3 x 10$^{-12}$ N. C) 1.67 x 10$^{-4}$ N. D) 1.67 x 10$^{-7}$ N. Show Answer Correct Answer: D) 1.67 x 10$^{-7}$ N. 12. If a new planet were found orbiting the Sun at 200AU, what would it's orbital period be? A) 34 years. B) 200 years. C) 300 years. D) 2800 years. E) 3 billion years. Show Answer Correct Answer: D) 2800 years. 13. 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. 14. 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. 15. Formula for weight is A) W=ma. B) W=mG. C) W=mg. D) W=m. Show Answer Correct Answer: C) W=mg. 16. If you double the mass of both objects, what happens to the gravity between them? A) Doubles. B) Triples. C) Quadruples. D) Does not change. Show Answer Correct Answer: C) Quadruples. 17. 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 3/4. B) Will increase the force of gravity by a factor of 12. C) Will reduce the force of gravity by a factor of 3/16. D) Will increase the force of gravity by a factor of 4/3. Show Answer Correct Answer: A) Will reduce the force of gravity by a factor of 3/4. 18. What is the mass of an object whose weight is 49 N? A) 5 kg. B) 6kg. C) 7kg. D) 10kg. Show Answer Correct Answer: A) 5 kg. 19. Doubling the mass of an object ..... A) Will double the force of gravity. B) Will half the force of gravity. C) Will quadruple the force of gravity. D) Will quarter the force of gravity. Show Answer Correct Answer: A) Will double the force of gravity. 20. 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. 21. 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. 22. 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. 23. 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) $\frac{1}{2}$. C) $\frac{1}{\sqrt{2}}$. D) $\frac{1}{\sqrt{5}}$. Show Answer Correct Answer: B) $\frac{1}{2}$. 24. 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) A. B) B. C) C. D) D. Show Answer Correct Answer: D) D. 25. According to Archimedes principle the upward force experiencing on a body immersed in it will be equal to A) The amount of water displaced. B) The volume of water displaced. C) The weight of the water displaced. D) The area of the object in contact with the water. Show Answer Correct Answer: C) The weight of the water displaced. ← 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