This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 6 Gravitation – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 5 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A ship uses which principle: A) Newton's law. B) Archimedes. C) Both a and b. D) None. Show Answer Correct Answer: B) Archimedes. 2. What does magnitude mean? A) Type. B) Size. C) Distance. D) Speed. Show Answer Correct Answer: B) Size. 3. According to the universal law of gravitation, how do objects fall towards the Earth? A) In a radial direction. B) In a straight line. C) In a circular motion. D) In a random pattern. Show Answer Correct Answer: A) In a radial direction. 4. As a space ship of constant mass moves farther away from Earth, the strength of the gravitational interaction between the Earth and the space craft A) Stays the same. B) Increases. C) There is not enough information to answer. D) Decreases. Show Answer Correct Answer: D) Decreases. 5. The potential energy of an orbiting satellite is given by ..... A) $-\\frac{GMm}{\left(R+h\right)^3}$. B) $-\\frac{GMm}{\left(R+h\right)}$. C) $-\\frac{GM}{\left(R+h\right)}$. D) $-\\frac{Gm}{\left(R+h\right)}$. Show Answer Correct Answer: B) $-\\frac{GMm}{\left(R+h\right)}$. 6. An object is moving in a circular path with a constant speed. Which of the following statements is true about the net force acting on the object? A) The net force is zero because the speed is constant. B) The net force is directed towards the center of the circle. C) The net force is directed away from the center of the circle. D) The net force is in the direction of the object's velocity. Show Answer Correct Answer: B) The net force is directed towards the center of the circle. 7. To convert km to m ..... A) Divide the km by 100. B) Multiply the km by 100. C) Multiply the km by 1000. D) Divide the km by 1000. Show Answer Correct Answer: C) Multiply the km by 1000. 8. An astronaut orbiting the earth in a circular orbit 120 km above the surface of earth gently drops a spoon out of space-ship. The spoon will: A) Fall vertically down to the earth. B) Move towards the moon. C) Will move along with space-ship. D) Will move in an irregular way then fall down to earth 10. The period of a satellite in a circular orbit around a planet. Show Answer Correct Answer: C) Will move along with space-ship. 9. 2 OBJECTS OF DIFFERENT MASSES FALLING NEAR THE SURFACE OF THE MOON WOULD A) Have same velocities at any instant. B) Have different acceleration. C) Experience forces of same magnitude. D) Undergo a change in their inertia. Show Answer Correct Answer: A) Have same velocities at any instant. 10. If two objects decreases their distance, it ..... the gravitational pull between the two objects A) Increases. B) Decreases. C) Has no effect on. D) Eliminates. Show Answer Correct Answer: A) Increases. 11. Suppose force between two bodies is F. If the distance between them gets multiplied by 4, what will be the new force between them? A) F/ 25 N. B) F/ 4 N. C) F/ 8 N. D) F/ 16 N. Show Answer Correct Answer: D) F/ 16 N. 12. If the objects are closer to each other, the force of attraction ..... A) No effect. B) Decreases. C) Increases. D) Disappear. Show Answer Correct Answer: C) Increases. 13. Two spherical objects have a force of gravitation between them. Find the change in the gravitational attraction Force between them if the first mass doubles in size and the other mass changes to be half as massive as before and distance do not change. A) It does not change the overall force of gravitation. B) It increases by a factor of 2 times stronger. C) It decreases by a factor of 1/2 as weak. D) It increases by a factor of 4 times stronger. Show Answer Correct Answer: A) It does not change the overall force of gravitation. 14. A stone is released from the top of the tower with height 81.64 m.Calculate its final velocity before touching the ground. A) 90m/s. B) 60m/s. C) 40m/s. D) 50m/s. Show Answer Correct Answer: C) 40m/s. 15. The atmosphere around the earth is held by A) A) Gravity. B) (b) Winds. C) (c) Clouds. D) (d) None of the above. Show Answer Correct Answer: A) A) Gravity. 16. If the distance between two objects is doubled, how does the gravitational force between them change according to Newton's Law? A) It becomes four times stronger. B) It becomes half as strong. C) It becomes one-fourth as strong. D) It remains the same. Show Answer Correct Answer: C) It becomes one-fourth as strong. 17. Brahe's observations suggested, A) Planets travel in a slightly elliptical shape. B) Planets travel in a rectangular shape. C) Planets travel in a perfect circle. D) None of the above. Show Answer Correct Answer: A) Planets travel in a slightly elliptical shape. 18. CHOSE THE CORRECT UNIT FOR THE RELATIVE DENSITY AMONG THE FOLLOWING: A) Kg/cm. B) Kg/mm. C) Kg/km. D) Unitless. Show Answer Correct Answer: D) Unitless. 19. A body weighs 700 gm wt on the surface of the earth. How much will it weigh on the surface of a planet whose mass is $\frac{1}{7}$ A) 200 gm wt. B) 400 gm wt. C) 50 gm wt. D) 300 gm wt. Show Answer Correct Answer: B) 400 gm wt. 20. If horizontal speed of projection is equalto the escape speed at that height $v_{h_{ }}=v_e$ A) Moves in an elliptical orbit round the Earth with the point of projection as perigee. B) Escapes from gravitational influence of Earth transversing aHyperbolic path. C) Travels along a parabolic path and have never returned to the point of projection. D) Moves in a stable circular orbit round the Earth. Show Answer Correct Answer: C) Travels along a parabolic path and have never returned to the point of projection. 21. Find the force due to gravity if the mass of one object is 2300 kg and the mass of a second object is 4000 kg. The distance between the two objects is 0.150 m. A) 4.09 x 10$^{-3}$ N. B) 244 N. C) 2.7 x 10$^{-2}$ N. D) 6.14 x 10$^{-4}$ N. Show Answer Correct Answer: C) 2.7 x 10$^{-2}$ N. 22. The law is universal in the sense thatit is applicable to ..... A) All bodies, whether the bodies are big or small. B) All bodies, whether they are celestial or terrestrial. C) All bodies, whether the bodies are big or small, whetherthey are celestial or terrestrial. D) None of the above. Show Answer Correct Answer: C) All bodies, whether the bodies are big or small, whetherthey are celestial or terrestrial. 23. What happens to the acceleration due to gravity with the increase in altitude from the surface of the earth? (a) Increases (b) Decreases (c) First decreases and then increases (d) Remains same A) A. B) B. C) C. D) D. Show Answer Correct Answer: B) B. 24. What gives weight to an object? A) Gravity. B) Mass. C) Centripetal ForceTagsNGSS.HS-PS2-4. D) None of the above. Show Answer Correct Answer: A) Gravity. 25. The mass of a body on the earth surface is 40 kg. Its mass at the centre of earth will be A) Zero. B) Greater than 40 kg. C) Infinite. D) Unchanged. Show Answer Correct Answer: D) Unchanged. ← 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 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 10Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books