This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 6 Gravitation – Quiz 19 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 19 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. If the distance between two objects is doubled, what happens to the gravitational force between them? A) It doubles. B) It halves. C) It becomes one-fourth. D) It remains the same. Show Answer Correct Answer: C) It becomes one-fourth. 2. What is the gravitational force between two 10 kilogram balls that are 5 meters apart from each other? A) $8.778\times10^{23}\\\frac{n}{kg}$. B) $5.56\times10^2\\frac{n}{kg}$. C) $1.5\times10^{-7}\\frac{n}{kg}$. D) $2.668\times10^{-10}\\frac{n}{kg}$. Show Answer Correct Answer: D) $2.668\times10^{-10}\\frac{n}{kg}$. 3. A body weighs 64 N on the surface of the earth. What is the gravitational force on the body due to earth at a height equal to one-third the radius of earth? A) 12 N. B) 24 N. C) 36 N. D) 48 N. Show Answer Correct Answer: C) 36 N. 4. A satellite travels around the Earth in a circular orbit. What is true about the forces acting in this situation? A) The resultant force is the same direction as the satellite's acceleration. B) The gravitational force acting on the satellite is negligible. C) There is no resultant force on the satellite relative to the Earth. D) The satellite does not exert any force on the Earth. Show Answer Correct Answer: A) The resultant force is the same direction as the satellite's acceleration. 5. Which of the following scenarios will result in the smallest gravitational force between two objects? A) Large masses close together. B) Small masses far apart. C) Large masses far apart. D) Small masses close together. Show Answer Correct Answer: B) Small masses far apart. 6. What are some practical applications of gravitational principles in technology? A) Applications include satellite positioning systems, structural engineering, and aerospace trajectory calculations. B) Underwater exploration devices. C) Television broadcasting technology. D) Weather forecasting systems. Show Answer Correct Answer: A) Applications include satellite positioning systems, structural engineering, and aerospace trajectory calculations. 7. Planets are moving around the Sun in A) Elliptical orbits. B) Circular orbits. C) Parabolic. D) None of these. Show Answer Correct Answer: A) Elliptical orbits. 8. Three laws derived by Johannes Kepler that describe the properties of all orbiting satellites A) Kepler's laws of planetary motion. B) All orbiting satellites must have a circular orbit. C) All orbiting satellites must have a constant speed. D) All orbiting satellites must have the same orbital period. Show Answer Correct Answer: A) Kepler's laws of planetary motion. 9. A body is taken from the moon to the Earth.Which is correct? A) Mass decreases. B) Mass increases. C) Weight increases. D) Weight decreases. Show Answer Correct Answer: C) Weight increases. 10. What did Sir Isaac Newton observe that led to the discovery of the universal law of gravitation? A) An apple falling from a tree. B) Two apples falling from different trees. C) Objects falling radially towards the Earth. D) The Earth attracting the Moon. Show Answer Correct Answer: A) An apple falling from a tree. 11. What is true of a bar magnet? A) The poles are the weakest. B) There are 2 south poles. C) There are two north poles. D) The poles are the strongest. Show Answer Correct Answer: D) The poles are the strongest. 12. Find the acceleration due to gravity on the surface of the moon if the mass of the moon is $\frac{1}{80}$ $\frac{1}{4}$ $s^2$ A) 9.8 m/ $s^2$. B) 3.92 m/ $s^2$. C) 1.96 m/ $s^2$. D) 20.4 m/ $s^2$. Show Answer Correct Answer: C) 1.96 m/ $s^2$. 13. When an object is thrown vertically upward, on reaching the highest point, the value of acceleration due to gravity will be A) 4.9 m/s$^{2}$. B) 9.8 m/s$^{2}$ upwards. C) 9.8 m/s$^{2}$ towards the ground. D) 0 m/s$^{2}$. Show Answer Correct Answer: C) 9.8 m/s$^{2}$ towards the ground. 14. An object weighs 10 N in air. When immersed fully in water, it weighs only 8 N. The weight of the liquid displaced by the object will be A) 2 N. B) 8 N. C) 10 N. D) 12 N. Show Answer Correct Answer: A) 2 N. 15. Newton's law of gravitation applies to A) Small bodies only. B) Plants only. C) All bodies irrespective of their size. D) For solar system. Show Answer Correct Answer: C) All bodies irrespective of their size. 16. Gravitational force is another name for gravity. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 17. According to Kepler's 3rd law of planetary motion ..... ? = Constant A) "Distance from sun" cubed upon "orbital time" squared. B) Area swept by the "line joining planets and sun" in "equal time intervals". C) Value of G. D) Mass of an object. Show Answer Correct Answer: A) "Distance from sun" cubed upon "orbital time" squared. 18. How could you increase the object's gravitational potential energy (GPE) without changing its distance from the ground (height) and gravity? A) Decrease the object's mass. B) Increase the object's height. C) Increase the object's mass. D) Decrease the object's height. Show Answer Correct Answer: C) Increase the object's mass. 19. UNIVERSAL LAW EXPLAINED SUCCESSFULLY A) THE FORCE BINDS THE EARTH. B) THE MOTION OF THE MOON ROUND THE EARTH. C) BUOYANCY. D) THE TIDES DUE TO THE MOON AND SUN. Show Answer Correct Answer: C) BUOYANCY. 20. A ball is thrown downward from a height of 20 m with an initial speed of 5 m/s. Using g=10 m/s2 what is its speed just before hitting the ground? A) 15 m/s. B) 20 m/s. C) 20.6 m/s. D) 25 m/s. Show Answer Correct Answer: C) 20.6 m/s. 21. The earth revolves around the sun in one year. If the distance between them becomes double, the new period of revolution will be A) $\frac{1}{2}years$. B) $2\sqrt{2}years$. C) 4 years. D) 8 years. Show Answer Correct Answer: B) $2\sqrt{2}years$. 22. Satellites orbiting the earth have finite life and sometimes debris of satellites fall to the earth. This is because: A) The solar cells and batteries in satellites run out. B) The laws of gravitation predict a trajectory spiraling inwards. C) Of viscous forces causing the speed of satellite and hence height to gradually decrease. D) Of collisions with other satellites. Show Answer Correct Answer: C) Of viscous forces causing the speed of satellite and hence height to gradually decrease. 23. If the mass of one object is doubled while the other mass and the distance between them remain constant, how does the gravitational force between the two objects change? A) It remains the same. B) It doubles. C) It triples. D) It quadruples. Show Answer Correct Answer: B) It doubles. 24. The units of velocity are A) Kg. B) M. C) M/s. D) N. Show Answer Correct Answer: C) M/s. 25. Doubling 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: D) Will quarter the force of gravity. ← 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