This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 6 Gravitation – Quiz 24 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 24 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A satellite is revolving around the sun in a circular orbit with uniform velocity v. If the gravitational force suddenly disappears, the velocity of the satellite will be: A) Zero. B) V. C) 2 V. D) Infinity. Show Answer Correct Answer: B) V. 2. A stone is thrown upward with an initial speed of 15 m/s. How long does it take for the stone to return to the thrower? A) 1.5 s. B) 2.0 s. C) 3.0 s. D) 3.5. Show Answer Correct Answer: C) 3.0 s. 3. Newton's law of gravitation is valid (a) on the earth only (b) on the moon only (c) in the laboratory only (d) everywhere A) A. B) B. C) C. D) D. Show Answer Correct Answer: D) D. 4. A rocket ship is sitting on the surface of a planet with a mass of 1 x 10$^{27}$ kg and a radius of 6.67 x 10$^{12}$ m. What is the planet's escape velocity? A) 14.14 m/s. B) 100 m/s. C) 141.4 m/s. D) 50 m/s. E) 10 m/s. Show Answer Correct Answer: C) 141.4 m/s. 5. Planets revolve around the sun in elliptical orbits A) Law of Periods. B) Law of orbits. C) Law of Areas. D) None of the above. Show Answer Correct Answer: B) Law of orbits. 6. The first and second stage of the rocket provides ..... respectively. A) Horizontal and vertical velocity. B) Vertical and Horizontal velocity. C) Vertical and linear velocity. D) Linear and Horizontal velocity. Show Answer Correct Answer: B) Vertical and Horizontal velocity. 7. Picking up a rock requires less effort on the Moon than onEarth. Why? A) The mass of the rock on the Moon is less. B) The acceleration due to gravity 'g' on the moon is greater than on the Earth. C) The acceleration due to gravity 'g' on the Moon is smaller than on the Earth. D) None of the above. Show Answer Correct Answer: C) The acceleration due to gravity 'g' on the Moon is smaller than on the Earth. 8. A basketball with weight of 19.6N$^\circ$ is dropped from a skyscraper. It falls for 6 seconds. Find the momentum of the ball by which it strikes. A) 108.6kg m/s$^{2}$. B) 39.2kg m/s$^{2}$. C) 49kg m/s$^{2}$. D) 117.6kg m/s$^{2}$. Show Answer Correct Answer: D) 117.6kg m/s$^{2}$. 9. The value of universal gravitational constant G depends on A) The nature of material of two bodies. B) The heat content of two bodies. C) The acceleration of two bodies. D) None of these. Show Answer Correct Answer: D) None of these. 10. What does Newton's Law of Gravitation state about the force between two masses? A) It is inversely proportional to the square of the distance between them. B) It is directly proportional to the square of the distance between them. C) It is inversely proportional to the product of their masses. D) It is directly proportional to the distance between them. Show Answer Correct Answer: A) It is inversely proportional to the square of the distance between them. 11. What is the SI unit of G? A) Nm$^{2}$/kg. B) Nm$^{2}$/kg$^{2}$. C) Unitless. D) None. Show Answer Correct Answer: B) Nm$^{2}$/kg$^{2}$. 12. A person would weigh more on Jupiter than on the Earth because ..... A) Jupiter has more mass, and therefore more gravity. B) Jupiter has less mass, and therefore more gravity. C) Jupiter has more mass, and therefore less gravity. D) Jupiter has less mass and therefore less gravity. Show Answer Correct Answer: A) Jupiter has more mass, and therefore more gravity. 13. According to Kepler's laws, the paths of the planets are A) Parabolas. B) Ellipses. C) Earth centered. D) Circle. Show Answer Correct Answer: B) Ellipses. 14. An astronaut on the Moon drops a hammer and a feather from the same height. Which statement is true about their fall? A) The hammer falls faster due to its mass. B) The feather falls faster due to air resistance. C) Both fall at the same rate due to gravity. D) The hammer falls slower due to its shape. Show Answer Correct Answer: C) Both fall at the same rate due to gravity. 15. When Ramana drops a ball from a certain height, the value of g will be? A) Zero. B) Negative. C) Positive. D) Negligible. Show Answer Correct Answer: C) Positive. 16. The amount of gravitational attraction between the Moon and an astronaut standing on its surface depends on the astronaut's distance from the center of the Moon and the astronaut's A) Height. B) Shape. C) Mass. D) None of the above. Show Answer Correct Answer: C) Mass. 17. IF THRUST IS 152N AREA ON WHICH THRUST IS 8m$^{2}$ THEN PRESSURE IS ..... N/m$^{2}$ A) 16. B) 17. C) 18. D) 19. Show Answer Correct Answer: D) 19. 18. If the original gravitational force between two objects is 100 N and both objects double in mass, what would the new force be? A) 100 N. B) 200 N. C) 500 N. D) 400 N. Show Answer Correct Answer: D) 400 N. 19. The "Law of Harmonies" is which of Kepler's Laws? A) 1st. B) 2nd. C) 3rd. D) 4th. Show Answer Correct Answer: C) 3rd. 20. SP2.eDoubling 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. 21. April and Nora are conducting an experiment with two spheres. Explain how the gravitational force between the spheres would change if both their masses are tripled and the distance between them is also tripled. A) The force remains the same. B) The force is tripled. C) The force is increased nine times. D) The force is reduced to one-third. Show Answer Correct Answer: A) The force remains the same. 22. Which of the following experiments can demonstrate the concept of gravity? A) Dropping two objects of different masses from the same height. B) Heating a metal rod and observing expansion. C) Mixing vinegar and baking soda to produce gas. D) Observing the refraction of light through a prism. Show Answer Correct Answer: A) Dropping two objects of different masses from the same height. 23. For a planet revolving around the Sun, the time period of the planet depends on A) Mass of the Sun. B) Mass of the planet. C) Distance between the planet and the Sun. D) Both A and C. Show Answer Correct Answer: D) Both A and C. 24. The relative density of an object is determined comparing its density with that of A) Water. B) Air. C) Iron. D) Wood. Show Answer Correct Answer: A) Water. 25. I man who weighs 1000N on the surface of the earth will weigh how much at twice the distance in the atmosphere. A) 500 N. B) 250 N. C) 2000 N. D) 4000N. Show Answer Correct Answer: B) 250 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