This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 6 Gravitation – Quiz 27 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 27 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What Model is where the sun is the center of the universe? A) Geocentric. B) Heliocentric. C) Earth's rotations. D) Earth's planets. Show Answer Correct Answer: B) Heliocentric. 2. Built a telescope and made discoveries which changed astronomy; discovered 4 moons of Jupiter A) Galileo Galilei. B) Aristotle. C) William Herschel. D) Claudius Ptolemy. Show Answer Correct Answer: A) Galileo Galilei. 3. If the original gravitational force between two objects is 100 N and one objects mass triples while the distance between them doubles, what would the new force be? A) 100 N. B) 75 N. C) 200 N. D) 400 N. Show Answer Correct Answer: B) 75 N. 4. Calculate the force of gravity (F) between two objects whose masses are m$_{1}$ = 100 kg and m$_{2}$ = 1000 kg if they are separared by a distance of d = 500 m. A) 2.67 * 10$^{-11}$ N. B) 0.4 N. C) 6.67 * 10$^{-11}$ N. D) 1.3 * 10$^{-8}$ N. Show Answer Correct Answer: A) 2.67 * 10$^{-11}$ N. 5. Compared to the gravitational field of Earth at its surface, Earth's gravitational field at Earth's center is A) Zero. B) .half as much. C) Twice as much. D) .three times as much. Show Answer Correct Answer: A) Zero. 6. A person dives into a swimming pool from a certain height. If it takes him 1 second to reach the surface, Find the height from he jumped. A) 4.9m. B) 9.8m. C) 19.6m. D) 7.2m. Show Answer Correct Answer: A) 4.9m. 7. This person discovered moons on Jupiter, which helped to support the heliocentric theory A) Aristotle. B) Copernicus. C) Ptolemy. D) Galileo. Show Answer Correct Answer: D) Galileo. 8. I am attracted to wooden benches ..... Gravitationally. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 9. On a ice rink two skaters of equal mass grab hands and spin in a mutual circle once every 2.5 seconds . If we assume their arms are each 0.80 m long and their individual masses are 55.0 kg, how hard are they pulling on one another? A) 2.8 N. B) 2800 N. C) 280 N. D) 28 N. Show Answer Correct Answer: C) 280 N. 10. What is the direction of the buoyant force on an object immersed in a liquid? A) Upward. B) Downward. C) Horizontal. D) Depends on the density of the object. Show Answer Correct Answer: A) Upward. 11. How far out from a mass should the gravitational field lines go ..... A) To where the gravitational field becomes negligable. B) To twice the diameter of the mass. C) Infinitely far. D) To four times the diameter of the mass. Show Answer Correct Answer: C) Infinitely far. 12. Consider a body of mass m which needs to bemoved from an orbit of radius 2R to 3R. What is the energy required? A) GmM/(12R). B) GmM/(6R). C) GmM/R. D) GmM/2R. Show Answer Correct Answer: B) GmM/(6R). 13. What happens to Gravitational force if I double both of the masses but don't change their distance? F=m$_{1}$m$_{2}$/d$^{2}$ A) Doubles. B) Half as big. C) 4x bigger. D) 4x smaller. Show Answer Correct Answer: C) 4x bigger. 14. What does G represent, and what is the value for it? A) Force of gravity; 9.8 m/s$^{2}$. B) Gravitational Inertia; 9.8 m/s$^{2}$. C) Gravitational Mass; 6.67 x 10-11 Nm2/kg2. D) Univeral Gravitational Constant; 6.67 x 10-11 Nm2/kg2. Show Answer Correct Answer: D) Univeral Gravitational Constant; 6.67 x 10-11 Nm2/kg2. 15. A test car moves at a constant speed around a circular track. If the car is 48.2 m from the track's center and has a centripetal acceleration of 8.05 m/s$^{2}$, what is the car's tangential speed? A) 19.7 m/s. B) 5.99 m/s. C) 0.17 m/s. D) 388.01 m/s. Show Answer Correct Answer: A) 19.7 m/s. 16. Kepler's third law can be applied to any two bodies as long as they are orbiting around a single common body. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 17. Which Scientist drew the conclusion that the force that causes objects to fall to Earth is the same force that causes planets to stay in orbit with the Sun? A) Galileo Galilee. B) Tycho Brahe. C) Isaac Newton. D) Albert Einstein. Show Answer Correct Answer: C) Isaac Newton. 18. The weight of a body is 120 N on the earth. If it is taken to the moon, its weight will be about (a) 120 N (b) 60 N (c) 20 N (d) 720 N A) A. B) B. C) C. D) D. Show Answer Correct Answer: C) C. 19. What variable do "Newtons" represent? A) Electrostatic Charge. B) Force. C) Distance. D) Mass. Show Answer Correct Answer: B) Force. 20. An artificial satellite is revolving round the earth in a circular orbit. Its velocity is half the escape velocity. Its height from earth's surface is A) 6400 km. B) 12800 km. C) 3200 km. D) 1600 km. Show Answer Correct Answer: A) 6400 km. 21. What do we call the gravitational force between the earth and an object? A) Weight. B) Mass. C) Thrust. D) Pressure. Show Answer Correct Answer: A) Weight. 22. The farther away a planet is from the sun, the ..... it takes it to orbit the sun once. A) Longer. B) Shorter. C) All the above. D) None of the above. Show Answer Correct Answer: A) Longer. 23. When a body is taken from the equator to the poles, its weight A) Remains constant. B) Increases. C) Decreases. D) Increases at N-pole and decreases at S-pole. Show Answer Correct Answer: B) Increases. 24. A stone is dropped from rest from a tower of height 45 m. How long does it take to hit the ground? A) 2 s. B) 3 s. C) 4 s. D) 6 s. Show Answer Correct Answer: B) 3 s. 25. The value of g on moon is ..... A) $1.6ms^2$. B) $1.6ms^{-2}$. C) $1.6m/s^{-2}$. D) $1.6ms^{-1}$. Show Answer Correct Answer: B) $1.6ms^{-2}$. ← 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