This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 6 Gravitation – Quiz 28 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 28 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Calculate the velocity of an object moved around a circle with a radius of 1.65 m and an acceleration of 3.5 m/s$^{2}$. A) 2.4 m/s. B) 3.6 m/s. C) 3.9 m/s. D) 4.2 m/s. Show Answer Correct Answer: A) 2.4 m/s. 2. What are Objects that affect one another? A) Attractive. B) Force. C) Gravitational force. D) Interacting objects. Show Answer Correct Answer: D) Interacting objects. 3. David, Michael, and Liam are in a room with a perfectly polished floor (frictionless), what would happen if they each placed a block on the floor? A) The blocks would move towards each other. B) The blocks would move away from each other. C) The blocks would remain stationary. D) The blocks would rotate around each other. Show Answer Correct Answer: A) The blocks would move towards each other. 4. What factors affect gravitational force? A) Mass, distance. B) Speed, distance. C) Momentum, mass. D) None of the above. Show Answer Correct Answer: A) Mass, distance. 5. Calculate the gravitational force between a 15-kg chinchilla and a 65-kg dog which are separated by 0.30 m. A) 3.7*10$^{-8}$ N. B) 1.3*10$^{12}$ N. C) 1.1*10$^{5}$ N. D) 7.2*10$^{-7}$ N. Show Answer Correct Answer: D) 7.2*10$^{-7}$ N. 6. The gravitational force between two objects is directly proportional to A) Product of their masses. B) Square of the distance between them. C) Cube of the distance between them. D) Reciprocal of the distance between them. Show Answer Correct Answer: A) Product of their masses. 7. A boy can jump 10 m vertically on the surface of Moon, where the value of acceleration due to gravity is 1/5 of theacceleration due to gravity on the surface of Earth. How high will he be able to jump on Earth? A) 9.8m. B) 6m. C) 5m. D) 2m. Show Answer Correct Answer: D) 2m. 8. The value of acceleration due to gravity g will be maximum at A) Equatorial line. B) The centre of earth. C) The poles of Earth. D) Midway between the pole and the equator. Show Answer Correct Answer: C) The poles of Earth. 9. Kepler's second law is also known as the law of: A) Ellipses. B) Equal areas. C) Harmonies. D) Universal gravitation. Show Answer Correct Answer: B) Equal areas. 10. The value of acceleration due to gravity at the highest point of the motion of the body when a body is projected upwards A) 0 m/s$^{2}$. B) 9.8 m/s$^{2 }$upwards. C) 9.8 m/s$^{2}$ downwards. D) 10 m/s$^{2}$. Show Answer Correct Answer: C) 9.8 m/s$^{2}$ downwards. 11. What is the value of the Earth's acceleration due to gravity (g)? A) 9.8 m/s$^{2}$. B) 100 m/s$^{2}$. C) 25 m/s$^{2}$. D) 3.14 m/s$^{2}$. Show Answer Correct Answer: A) 9.8 m/s$^{2}$. 12. Which of those have highly elliptical orbits? A) Planets. B) Satellites. C) Comets. D) None of the above. Show Answer Correct Answer: C) Comets. 13. Consider two objects in space. If the distance between their centers is halved, what happens to the gravitational force between them? A) It becomes four times stronger. B) It becomes twice as strong. C) It remains the same. D) It becomes half as strong. Show Answer Correct Answer: A) It becomes four times stronger. 14. What is in the center of the Heliocentric Model? A) Sun. B) Comet. C) Jupiter. D) Earth. Show Answer Correct Answer: A) Sun. 15. According to Newton's third law of motion, what is the relationship between the forces of attraction between two objects? A) They are equal in magnitude. B) They are inversely proportional. C) They are directly proportional. D) They are unrelated. Show Answer Correct Answer: A) They are equal in magnitude. 16. How does the mass weight of an object vary with respect to mass and radius of the earth. In a hypothetical case, if the diameter of the earth becomes half of its present value and its mass becomes four times of its present value, then how would the weight of any object on the surface of the earth be affected? A) M, w. B) 16m, w. C) M, 16w. D) 16m, 16w. Show Answer Correct Answer: C) M, 16w. 17. What would be the weight of an object on Earth if its mass is 10 kg? A) 10 N. B) 98 N. C) 9.8 N. D) 100 N. Show Answer Correct Answer: B) 98 N. 18. The weight of a body is maximum at: A) The poles. B) The equator. C) The center of the Earth. D) None of the above. Show Answer Correct Answer: A) The poles. 19. If the distance between two objects is tripled, the gravitational force between them will be: A) Increased by 3 times. B) Reduced to 1/3. C) Reduced to 1/9. D) Increased by 9 times. Show Answer Correct Answer: C) Reduced to 1/9. 20. The minimum velocity required to leave the atmosphere is called the ..... A) Orbital velocity. B) Ejection velocity. C) Escape velocity. D) Terminal velocity. Show Answer Correct Answer: C) Escape velocity. 21. As the distance between two objects increases, the force of gravity between them decreases. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 22. Two objects with masses of 10 kg and 20 kg are 5 meters apart. What is the gravitational force between them? (Use $G = 6.674 \times 10^{-11} \, \text{Nm}^2/\text{kg}^2$ A) $5.34 \times 10^{-10} \, \text{N}$. B) $2.67 \times 10^{-10} \, \text{N}$. C) $1.33 \times 10^{-10} \, \text{N}$. D) $6.67 \times 10^{-10} \, \text{N}$. Show Answer Correct Answer: B) $2.67 \times 10^{-10} \, \text{N}$. 23. The gravitational field strength of Earth is ..... A) Uniform far away from the surface and radial close to the surface. B) Uniform close to the surface and radial far away from the surface. C) All the above. D) None of the above. Show Answer Correct Answer: B) Uniform close to the surface and radial far away from the surface. 24. Two factors effecting the strength of gravity between 2 objects are ..... A) Weight and mass. B) Distance and weight. C) Mass and matter. D) Mass and distance. Show Answer Correct Answer: D) Mass and distance. 25. What is $\left(5\times2\right)x$ A) 5/2x. B) 10 x. C) 2/5 x. D) 25x. Show Answer Correct Answer: B) 10 x. ← 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