This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 6 Gravitation – Quiz 21 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 21 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the effect of more distance between two objects on gravitational force? A) Increases. B) Decreases. C) Disappears. D) Remains the same. Show Answer Correct Answer: B) Decreases. 2. Total ennergy of the satellite is ..... the potential energy. A) Equal to. B) One third. C) Half. D) Double. Show Answer Correct Answer: C) Half. 3. Pressure inversely proportional to A) Time. B) Weight. C) Area. D) Volume. Show Answer Correct Answer: C) Area. 4. If the original gravitational force between two objects is 100 N and the distance between them doubles, what would the new force be? A) 100 N. B) 200 N. C) 50 N. D) 25 N. Show Answer Correct Answer: D) 25 N. 5. A meteor follows an elliptical orbit around the Sun. When does the meteor sweep through the greatest area in time t? A) When it is closest to the Sun. B) When it is furthest from the Sun. C) It is impossible for the meteor to maintain an elliptical orbit therefore the question is not valid. D) The meteor sweeps through equal areas in the same amount of time anywhere in the orbit. E) None of the above. Show Answer Correct Answer: D) The meteor sweeps through equal areas in the same amount of time anywhere in the orbit. 6. Halving the distance between two objects ..... 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: C) Will quadruple the force of gravity. 7. A coin was tossed vertically upward at a speed of 10.0 m/s from the ground. (c) How long was the coin airborne? A) 2.01 s. B) 2.04 s. C) 2.07 s. D) 2.10 s. Show Answer Correct Answer: B) 2.04 s. 8. A satellite orbits Earth at a distance where the gravitational force is one fourth of that at the surface. What is the distance from the center of the Earth to the satellite? A) 1 Earth radius. B) 2 Earth radii. C) 3 Earth radii. D) 4 Earth radii. Show Answer Correct Answer: B) 2 Earth radii. 9. What is the psychological illusion of heaviness called? A) Apparent Weight. B) Actual Weight. C) Inverse Square Law. D) Gravitational Field. Show Answer Correct Answer: A) Apparent Weight. 10. Isaac Newton's universal law of gravitation A) Showed how one law could explain all motion in the universe. B) Was denounced by the Anglican Church as work of the Devil. C) Was laughed at by Galileo, Kepler, & Copernicus. D) Refuted Galileo Galilei's theory of universal movement. Show Answer Correct Answer: A) Showed how one law could explain all motion in the universe. 11. Why would you weigh less on the moon? A) Less air. B) Less sunlight. C) There is no water on the moon. D) Less gravitational pull. Show Answer Correct Answer: D) Less gravitational pull. 12. The model of the solar system where Earth is at the center of the solar system and the sun and all the planets orbit around it; this is also called the geocentric model A) Ptolemaic model. B) The heliocentric model, where the sun is at the center and the planets orbit around it. C) The heliostatic model, where the planets orbit around the sun and the Earth is stationary. D) The Copernican model, where the planets orbit around the sun in a circular motion. Show Answer Correct Answer: A) Ptolemaic model. 13. On the earth, a stone is thrown from a height in a direction parallel to the earth's surface while another stone is simultaneously dropped from the same height. Which stone would reach the ground first and why? A) Free fall will reach first. B) Body with horizontal motion reach first. C) Both will reach at same time. D) Never reach ground. Show Answer Correct Answer: C) Both will reach at same time. 14. Ocean tides occur mainly because A) Water normally runs to the side of Earth away from the sun. B) Of the gravitational pull of the sun on Earth. C) Of different gravitational pulls of the moon on opposite sides of Earth. D) As Earth rotates it leaves the ocean water somewhat behind it. Show Answer Correct Answer: C) Of different gravitational pulls of the moon on opposite sides of Earth. 15. State the definition of Gravitational field strength A) Gravitational force per unit time acting on a body at a point in a gravitational field. B) The force between two bodies of mass M and m is directly proportional to the product of their masses. C) Gravitational force per unit mass acting on a body at a point in a gravitational field. D) None of the above. Show Answer Correct Answer: C) Gravitational force per unit mass acting on a body at a point in a gravitational field. 16. A person weighing 785 newtons on the surface of Earth would weigh 298 newtons on the surface of Mars. What is the magnitude of the gravitational field strength on the surface of Mars? A) 2.63 N/kg. B) 3.72 N/kg. C) 6.09 N/kg. D) 9.81 N/kg. Show Answer Correct Answer: B) 3.72 N/kg. 17. What is scientific notation used for? A) Conveying really small or large numbers in a compact way. B) Conveying numbers between 1 and 9. C) Conveying numbers with only one significant figure. D) Conveying numbers with a decimal. Show Answer Correct Answer: A) Conveying really small or large numbers in a compact way. 18. Why does a block of plastic released under water come up to the surface of water? A) Because the block is lighter than water. B) Because the block is denser than water. C) Because of the buoyant force exerted by the water. D) Because of the gravitational force exerted by the earth. Show Answer Correct Answer: C) Because of the buoyant force exerted by the water. 19. If you double the mass of an object, how will the gravity force it exerts on other objects be affected? A) Gravity force will double. B) Gravity force will be 1/4 as much. C) Gravity force will be 1/2 as much. D) Gravity force will not be affected. Show Answer Correct Answer: A) Gravity force will double. 20. If the original gravitational force between two objects is 100 N and the distance between them is cut in half, what would the new force be? A) 100 N. B) 200 N. C) 400 N. D) 25 N. Show Answer Correct Answer: C) 400 N. 21. The relation F = GM mld$^{2}$, the quantity G is ..... A) Depends on the value of g at the place of observation. B) Is used only when the Earth is one of the two masses. C) Is greatest at the surface of the Earth. D) Is universal constant of nature. Show Answer Correct Answer: D) Is universal constant of nature. 22. What keeps the planets in orbit around the sun? A) Gravity. B) Friction. C) Density. D) Distance. Show Answer Correct Answer: A) Gravity. 23. Which would have the LEAST gravitational potential energy (GPE)? A) A ball sitting on the ground. B) Moon viewed from the Earth. C) An airplane flying 30, 000 feet above the ground. D) A rock sitting on top of Mt. Everest. Show Answer Correct Answer: A) A ball sitting on the ground. 24. If this vertical velocity is less that theescape velocity, the satellite ..... A) Returns to the Earth's surface. B) Escape the gravitational field. C) Experience a parabolic path. D) Revolves in a circular orbit around the earth. Show Answer Correct Answer: A) Returns to the Earth's surface. 25. What is the gravitational force between two 1 kg masses that are 1 meter apart? (Use $G = 6.67 \times 10^{-11} \, \text{N m}^2 \text{kg}^{-2}$ A) $6.67 \times 10^{-11} \, \text{N}$. B) $3.34 \times 10^{-11} \, \text{N}$. C) $1.67 \times 10^{-11} \, \text{N}$. D) $9.81 \times 10^{-11} \, \text{N}$. Show Answer Correct Answer: A) $6.67 \times 10^{-11} \, \text{N}$. ← 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