This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 6 Gravitation – Quiz 22 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 22 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is true about geostationary satellite? I It moves in the direction of the earth orbit. II Its period of rotation is 24 hours. III Its orbit is always above the same geographical location. IV It does not experience any gravitational pull. A) I, II and III only. B) I and III only. C) II and IV only. D) I, II, III and IV. Show Answer Correct Answer: A) I, II and III only. 2. Why do astronauts in space appear weightless? A) There is no gravity in space. B) Air resistance opposes gravity. C) They have no mass in space. D) They are in free fall. Show Answer Correct Answer: D) They are in free fall. 3. What keeps an Earth satellite moving in its orbit? A) A Gravitational attraction of Sun. B) Burning of fuel. C) Ejection of gases from the exhaust of the satellite. D) Gravitational attraction between satellite and Earth. Show Answer Correct Answer: D) Gravitational attraction between satellite and Earth. 4. Two point of masses, each of mass 100 kg are separated by a distance of 0.5m. The force acting between them is $\left(G=6.67\times10^{-11}\frac{N.m^2}{kg^2}\right)$ A) Repulsive force of $1.33\times10^{-6}N$. B) Attractive force of $2.66\times10^{-6}N$. C) Repulsive force of $2.66\times10^{-6}N$. D) Attractive force of $1.33\times10^{-6}N$. Show Answer Correct Answer: B) Attractive force of $2.66\times10^{-6}N$. 5. Value of 'G' is directly proportional to A) Mass of the planet. B) Velocity of the planet. C) Radius of the planet. D) Mass of the object. E) Nothing. Show Answer Correct Answer: E) Nothing. 6. States that gravitational force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. A) Newton's universal law of gravitation. B) Copernican model. C) Eccentricity. D) Ptolemaic model. Show Answer Correct Answer: A) Newton's universal law of gravitation. 7. Calculate the gravitational force of attraction between a 1, 819-kg car and a 10, 200-kg truck, separated by a distance of 0.25 m. A) 2 x 10$^{-2}$ N. B) 6.4 x 10$^{-3}$ N. C) 2 x 10$^{2}$ N. D) 9 x 10$^{-5}$ N. E) 5 x 10$^{-4}$ N. Show Answer Correct Answer: A) 2 x 10$^{-2}$ N. 8. 'G' is called A) Acceleration due to gravity. B) Gravity. C) Gravitational constant. D) Gravitational force. Show Answer Correct Answer: C) Gravitational constant. 9. When farther away from the sun, planets travel A) Faster. B) Slower. C) At the same speed as if closer to the sun. D) None of the above. Show Answer Correct Answer: B) Slower. 10. Weight of an object is the force with which it is attracted towards the ..... A) G. B) MOON. C) EARTH. D) G. Show Answer Correct Answer: C) EARTH. 11. How is the period of circular motion defined? A) Time taken to complete half a circle. B) Time taken to complete one full circle. C) Time taken to reach maximum speed. D) Time taken to stop. Show Answer Correct Answer: B) Time taken to complete one full circle. 12. WHICH ONE IS NOT RELATED TO ARCHIMEDES PRINCIPLE SONAR A) SHIPS. B) LACTOMETER. C) HYDROMETER. D) SONAR. Show Answer Correct Answer: D) SONAR. 13. What is the actual weight of an object? A) The gravitational force acting upon a body caused by a planet or star. B) The psychological illusion and heaviness feeling of an object. C) The weight calculated by mass times the gravitational field. D) The weight calculated by mass times the acceleration. Show Answer Correct Answer: C) The weight calculated by mass times the gravitational field. 14. How does the concept of gravitational field strength relate to weight? A) Weight is independent of gravitational field strength. B) Weight is the product of mass and gravitational field strength. C) Gravitational field strength is the same everywhere on Earth. D) Weight is the same as mass regardless of location. Show Answer Correct Answer: B) Weight is the product of mass and gravitational field strength. 15. Assertion:Universal gravitational constant G is a scalar quantity. Reason:The value of G is same through out the universe. 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. 16. Two satellites A and B of the same mass m are at distances 2R$_{e}$ and 6R$_{e}$, above the earths surface where R$_{e}$ = radius of earth. The ratio of potential energy of A to that of B is A) 3. B) 7/3. C) 7/4. D) 3/7. Show Answer Correct Answer: B) 7/3. 17. What is the force that balances the gravitational attraction force in Henry Cavendish's experiment? A) Torsional force. B) Centripetal force. C) Frictional force. D) Spring force. Show Answer Correct Answer: A) Torsional force. 18. Does the mass of an object affect the gravitational force between two objects? A) Yes, the mass of both objects affects the force. B) No, the mass of an object has no effect on the force. C) Yes, only the mass of the first object affects the force. D) Yes, only the mass of the second object affects the force. Show Answer Correct Answer: A) Yes, the mass of both objects affects the force. 19. Which of the following is the minimum amount of work done by a hydraulic lift to raise a 150-kg aluminum block 2.0 m vertically? A) 75 N*m (J). B) 300 N*m (J). C) 1500 N-m (J). D) 2940 N*m (J). Show Answer Correct Answer: D) 2940 N*m (J). 20. Name the force that causes acceleration of an object moving along a circle and keeps the body moving. A) Centripetal force. B) Centrifugal force. C) Repulsive force. D) Attractive force. Show Answer Correct Answer: A) Centripetal force. 21. What is the easiest way to demonstrate the effect of gravitational force? A) Suspend a horizontal scale with two masses. B) Drop two large masses from a height. C) Push two small masses towards each other. D) Place two large masses on a scale. Show Answer Correct Answer: A) Suspend a horizontal scale with two masses. 22. Why do astronauts feel weightless in space? A) Due to the lack of oxygen. B) Due to the lack of gravity. C) Due to differences in mass. D) Due to air resistance. Show Answer Correct Answer: B) Due to the lack of gravity. 23. Day and night are caused by ..... A) Earth's rotation. B) Earth's revolution. C) Moon's revolution. D) Moon's rotation. Show Answer Correct Answer: A) Earth's rotation. 24. Geostationary satellites revolve around the Earth: A) In any orbit. B) In a polar orbit. C) In an equatorial orbit. D) In a highly elliptical orbit. Show Answer Correct Answer: C) In an equatorial orbit. 25. Two objects with mass are separated a distance of r. if the mass of one doubles, the force of gravity between them A) Doubles. B) Gets cut in half. C) Triples. D) Does not change. Show Answer Correct Answer: A) Doubles. ← 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