This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 6 Gravitation – Quiz 15 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 15 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The unit for Universal Gravitational Constant is: A) $\frac{Nm^2}{kg^2}$. B) $Nm^2kg^{-1}$. C) $\frac{Nm}{kg^2}$. D) None of the above. Show Answer Correct Answer: A) $\frac{Nm^2}{kg^2}$. 2. What is the formula for calculating the force required to lift an object? A) F = m / g. B) F = m + g. C) F = m x g. D) F = m-g. Show Answer Correct Answer: C) F = m x g. 3. What is the r in the gravitational equation force? A) The distance between the two objects. B) The reflection between the two objects. C) The resemblance between the two objects. D) The density of the two objects combined. Show Answer Correct Answer: A) The distance between the two objects. 4. ..... of a system of particles is defined as the external work required to assemble the particles from infinity to a given configurartion. A) Gravitational force. B) Gravitational potential. C) Gravitational potential energy. D) None of the above. Show Answer Correct Answer: C) Gravitational potential energy. 5. A stone is allowed to fall from the top of a tower 100m high and at the same time another stone is projected vertically upwards from the ground with a velocity of 25 m/s. Calculate when and where the two stones will meet. A) 4s, 21.6m. B) 5s, 19.8m. C) 6s, 23.5m. D) 3s, 18m. Show Answer Correct Answer: A) 4s, 21.6m. 6. The gravitational force between two objects changes with the distance between the two objects A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 7. Scarlett and Aria are conducting a physics experiment. They have two objects of equal mass. They decide to double the masses of both objects. What happens to the force of gravitational attraction between them? A) Doubles. B) Quadruples. C) Cut in Half. D) 4x Smaller. Show Answer Correct Answer: A) Doubles. 8. What is the nature of gravity according to Newton's Law of Universal Gravitation? A) Repulsive force. B) Attractive force. C) Electromagnetic force. D) Nuclear force. Show Answer Correct Answer: B) Attractive force. 9. The value of 'g' A) Increases as we go above the earth's surface. B) Decreases as we go to the centre of the earth. C) Remains constant. D) Is more at equator and less at poles. Show Answer Correct Answer: B) Decreases as we go to the centre of the earth. 10. The period of geostationary artificial satellite of earth is: A) 6 hours. B) 24 hours. C) 12 hours. D) 365 days. Show Answer Correct Answer: B) 24 hours. 11. If the original gravitational force between two objects is 100 N and both masses double and the distance is doubled, what would the new force be? A) 100 N. B) 50 N. C) 200 N. D) 400 N. Show Answer Correct Answer: A) 100 N. 12. ..... is the amount of matter present in the object. A) Weight. B) Mass. C) All the above. D) None of the above. Show Answer Correct Answer: A) Weight. 13. Gravitational potential at a point is ..... A) The work done in bringing a unit mass from infinity to the point. B) The work done in bringing a unit mass from the point to infinity. C) The work done in bringing a unit charge from infinity to the point. D) The work done in bringing a unit mass from twice the radius of the mass to the point. Show Answer Correct Answer: A) The work done in bringing a unit mass from infinity to the point. 14. If we double the distance between two objects, what happens to their gravitational Force? A) 4 x Bigger. B) 2 x Bigger. C) 4 x Smaller. D) 2 x Smaller. Show Answer Correct Answer: C) 4 x Smaller. 15. Gravitational Potential Energy (E$_{p}$) is ..... A) The energy stored in a stretched object. B) The energy stored in an electrically charged object. C) The energy stored in a frozen object. D) The energy stored in a raised object. Show Answer Correct Answer: D) The energy stored in a raised object. 16. The relation between height and depth when the acceleration due to gravity at a height h is equal to that at a depth d is given by A) D=2h. B) H=2d. C) H=3d. D) H=3/2 d. Show Answer Correct Answer: A) D=2h. 17. If the sun's mass is 2.0x10$^{30}$ kg, and itsradius is 7.0 x 10$^{8}$ m, what is the strength of its gravitational field, "g" ? A) 9.8 m/s$^{2}$. B) 272.2 m/s$^{2}$. C) 27.2 m/s$^{2}$. D) 200 m/s$^{2}$. Show Answer Correct Answer: B) 272.2 m/s$^{2}$. 18. Which Scientist drew the conclusion that all masses accelerate at the same rate regardless of their differences in mass? A) Galileo Galilee. B) Tycho Brahe. C) Isaac Newton. D) Albert Einstein. Show Answer Correct Answer: A) Galileo Galilee. 19. Which of the following was NOT a contribution of Newton's to science? A) The law of universal gravitation. B) The first good experimental measure of G, the gravitational constant of proportionality. C) F = ma. D) Explanations of optical phenomena. Show Answer Correct Answer: B) The first good experimental measure of G, the gravitational constant of proportionality. 20. "A force that make an object to follow a circular path with direction always towards the center of curvature." Statement above is the definition of A) Gravitational force. B) Escape force. C) Centripetal force. D) Gravitational field strength. Show Answer Correct Answer: C) Centripetal force. 21. Would a person weigh the same on different moons? A) Weight is determined by the color of the moon. B) Weight is determined by the distance from the Earth. C) No, weight depends on the gravitational field strength of the moon. D) Yes, weight remains constant on all moons. Show Answer Correct Answer: C) No, weight depends on the gravitational field strength of the moon. 22. The square of its period of revolution around the sun is ..... proportional to the cube of the mean distance of a planet from the sun. A) Inversely. B) Directly. C) All the above. D) None of the above. Show Answer Correct Answer: B) Directly. 23. Which isotope is used in the treatment of cancer? A) COBALT-60. B) CARBON-14. C) U-235. D) I-101. Show Answer Correct Answer: A) COBALT-60. 24. An object will float on water if it is A) Less dense than water. B) More dense than water. C) The same density as water. D) None of the above. Show Answer Correct Answer: A) Less dense than water. 25. What is the centripetal force required to keep an object moving in a circle of radius 5 meters at a speed of 10 m/s? A) 10 N. B) 20 N. C) 100 N. D) 200 N. Show Answer Correct Answer: D) 200 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