This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 6 Gravitation – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 7 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. If one of two objects increases its mass, 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. 2. A bicycle tire has a period of 0.3s . What is thespeed if the radius is 30 cm? A) 6 m/s. B) 3 m/s. C) 60 m/s. D) 30 m/s. Show Answer Correct Answer: A) 6 m/s. 3. If the mass of Earth were doubled, the value of g would: A) Remain the same. B) Be doubled. C) Be halved. D) Increase by four times. Show Answer Correct Answer: B) Be doubled. 4. A spring balance is graduated on sea level. If a body is weighed with this balance at consecutively increasing heights from earth's surface, the weight indicated by the balance: A) Will go on increasing continuously. B) Will go on decreasing continuously. C) Will remain same. D) Will first increase and then decrease. Show Answer Correct Answer: B) Will go on decreasing continuously. 5. What is the direction of the force exerted by the water on a bottle immersed in it? A) Upward. B) Downward. C) Horizontal. D) Depends on the shape of the bottle. Show Answer Correct Answer: A) Upward. 6. What happens to the force between two charged objects if you triple the magnitude of one charge? A) 1/3X. B) 3X. C) 1/9X. D) 9X. Show Answer Correct Answer: B) 3X. 7. What is gravitational field strength in the context of a roller coaster? A) The force that changes an object's color. B) The force that pushes objects apart. C) The force per unit mass experienced by an object in a gravitational field. D) The force that pulls objects toward each other. Show Answer Correct Answer: C) The force per unit mass experienced by an object in a gravitational field. 8. Why does acceleration (change in rate of velocity) happen when going in a circle even if you are going the same speed? A) The direction around the circle changes at every point. B) Velocity does not change. C) Because direction is the same around the circle. D) Neither. Show Answer Correct Answer: A) The direction around the circle changes at every point. 9. An object experiences zero gravitational force: A) At the surface of the Earth. B) At the center of the Earth. C) At the top of a mountain. D) At the equator. Show Answer Correct Answer: B) At the center of the Earth. 10. If the mass of a planet near the Sun were doubled, the force of attraction would A) Remain constant. B) Be squared. C) Be one half as strong. D) Be doubled. Show Answer Correct Answer: D) Be doubled. 11. When a body is thrown up, the force of gravity is (a) in the upward direction (b) in the downward direction (c) zero (d) in the horizontal direction A) A. B) B. C) C. D) D. Show Answer Correct Answer: B) B. 12. When an astronaut in orbit is weightless, he or she is A) Beyond the pull of Earth's gravity. B) Still in the pull of Earth's gravity. C) In the pull of interstellar gravity. D) .beyond the pull of the sun's gravity. Show Answer Correct Answer: B) Still in the pull of Earth's gravity. 13. The value of acceleration due to gravity at the poles A) Is more than at the equator. B) Is less than at the equator. C) Same as at the equator. D) Zero. Show Answer Correct Answer: A) Is more than at the equator. 14. Which of the following best describes the significance of the semi-major axis in Kepler's laws? A) It determines the color of the planet. B) It is used to calculate the orbital period using Kepler's third law. C) It is the shortest diameter of the ellipse. D) It has no significance. Show Answer Correct Answer: B) It is used to calculate the orbital period using Kepler's third law. 15. What is a measure of how much matter is present in a substance? A) Mass. B) Force. C) Gravitational force. D) Weight. Show Answer Correct Answer: A) Mass. 16. Jupiter is the largest plant at 1.9 x 10$^{27}$ kg and has almost 100 moons. One of its largest moons is Io at 8.93 x10$^{22}$ kg. The distance between Jupiter and it's moon is 4.217 x 10$^{8}$ m. What are the gravitational forces between them? A) 2.93 x 10$^{30 }$N. B) 1.13 x 10$^{15 }$N. C) 5.5 x 10$^{13 }$N. D) 6.4 x 10$^{22 }$N. Show Answer Correct Answer: D) 6.4 x 10$^{22 }$N. 17. How could you increase the gravitational potential energy of an object without changing its mass and gravity? A) Make the object larger. B) Lower the object towards the ground. C) Raise the object farther off the ground. D) Allow the object to roll on the ground. Show Answer Correct Answer: C) Raise the object farther off the ground. 18. The gravitational potential energy of an object is maximum when: A) It is at the surface of the Earth. B) It is at the center of the Earth. C) It is at infinity. D) It is at the poles. Show Answer Correct Answer: C) It is at infinity. 19. Two satellites of mass $m_1$ $m_2$ $m_1$ $m_2$ $r_1$ $r_2$ $\left(r_1>r_2\right)$ A) $\frac{v_1}{r_1}=\frac{v_2}{r_2}$. B) $v_1 C) $v_1=v_2$. D) $v_1>v_2$. Show Answer Correct Answer: B) $v_1 20. Newton's law of universal gravitation had a great impact on society as many scientists, artists, writers, and philosophers hoped that A) More complex and universal laws would explain other phenomena of the world. B) Greater observations would require fewer experimentations. C) No further explanation of other phenomena of the world would be required. D) Studying other phenomena of the world would lead to just as simple and universal laws. Show Answer Correct Answer: D) Studying other phenomena of the world would lead to just as simple and universal laws. 21. A planet and a moon have a gravity force between them of F. If the planet was 3x more massive and they were moved 3x further apart. How much gravity force would there be between them? F=m$_{1}$m$_{2}$/d$^{2}$ A) 3 F. B) 1 F. C) 9 F. D) 1/9 F. E) 1/27 F. Show Answer Correct Answer: B) 1 F. 22. Calculate the gravitational force between two objects when they are 0.850m apart. Each object has a mass of 12.00kg. A) 1.3x10$^{-8}$N. B) 3.00x10$^{-6}$N. C) 2.22x10$^{-9}$N. D) 2.23x10$^{-8}$N. Show Answer Correct Answer: A) 1.3x10$^{-8}$N. 23. Which of the following Laws of Kepler did Newton use to calculate the force of attraction? A) Sun is situated at the centre of the orbit. B) The orbit of the planet is ellipse. C) The cube pf the mean distance of a planet from the sun is proportional to the square of its orbital period. D) The line joining the planet and the sun sweeps equal areas in equal interval of time. Show Answer Correct Answer: C) The cube pf the mean distance of a planet from the sun is proportional to the square of its orbital period. 24. A body of mass 20kg is placed on an area 2m$^{2}$ . find the pressure executed. A) 50 Pa. B) 200 Pa. C) 150 Pa. D) 98 Pa. Show Answer Correct Answer: D) 98 Pa. 25. All objects in the universe attract each other A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. ← 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 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