This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 6 Gravitation – Quiz 35 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 35 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. In Newton's equation for the law of universal gravitation, F = Gm$_{1}$m$_{2}$/r$^{2}$, r is A) The distance between the centers of the masses. B) A universal constant. C) The distance between a planet and the Sun. D) The difference in the two masses. Show Answer Correct Answer: A) The distance between the centers of the masses. 2. A ball weighing 4 kg of density 4000 kgm$^{-3}$ is completely immersed in water of density10$^{3}$ kgm$^{-3}$. What will be the buoyant force acting on it? A) 100 N. B) 10 N. C) 1600 N. D) 16 N. Show Answer Correct Answer: B) 10 N. 3. The discovery of "Universal Gravitation" is associated with: A) Robert Hook. B) Isaac Newton. C) James Joule. D) Max Plank. E) Christian Huygens. Show Answer Correct Answer: B) Isaac Newton. 4. The gravitational pull is ..... proportional to the mass of object 2 A) Conversely. B) Directly. C) Phonetically. D) Inversely. Show Answer Correct Answer: B) Directly. 5. What prevents planets from drifting off into space and keeps it in the planets in our Solar System? A) Gravity. B) Weight. C) Friction. D) Forward Motion. Show Answer Correct Answer: A) Gravity. 6. A satellite orbits Earth at a certain distance. If the mass of the Earth were to suddenly double, what would happen to the gravitational force acting on the satellite? A) It would remain unchanged. B) It would double. C) It would quadruple. D) It would halve. Show Answer Correct Answer: B) It would double. 7. What is the factors that affect gravitational force A) Mass, distance. B) Speed, distance. C) Momentum, mass. D) None of the above. Show Answer Correct Answer: A) Mass, distance. 8. According to Kepler's first law, what is the shape of the orbit of a planet around the Sun? A) Circle. B) Ellipse. C) Parabola. D) Hyperbola. Show Answer Correct Answer: B) Ellipse. 9. Distance and Gravitational Force are ..... proportional. A) Directly. B) Inversely. C) Not. D) None of the above. Show Answer Correct Answer: B) Inversely. 10. The escape velocity of a body from Earth's surface is 11 km/s. What will be its value from a planet whose radius isdouble but density same as that of Earth? A) 11 km/s. B) 22 km/s. C) 33 km/s. D) 44 km/s. Show Answer Correct Answer: B) 22 km/s. 11. What is the formula for gravitational force between two masses? A) $F = G \frac{m_1 m_2}{r^2}$. B) $F = G \frac{m_1 m_2}{r}$. C) $F = G \frac{m_1 + m_2}{r^2}$. D) $F = G \frac{m_1-m_2}{r^2}$. Show Answer Correct Answer: A) $F = G \frac{m_1 m_2}{r^2}$. 12. A planet has half the mass and half the radius of the Earth. What is the gravitational field strength at the surface of the planet? The gravitational field strength at the surface of the Earth is 10 N kg$^{-1}$. A) 2.5 N kg$^{-1}$. B) 5 N kg$^{-1}$. C) 10 N kg$^{-1}$. D) 20 N kg$^{-1}$. Show Answer Correct Answer: D) 20 N kg$^{-1}$. 13. Samuel and Arjun are studying the solar system. They are curious about the relationship between the gravitational force and the distance between the center of the Earth and the Moon. Ethan explains it to them. How does he describe it? A) Gravitational force increases with distance. B) Gravitational force decreases with distance. C) Gravitational force remains constant with distance. D) Gravitational force is unrelated to distance. Show Answer Correct Answer: B) Gravitational force decreases with distance. 14. The acceleration due to gravity ..... with depth. A) Increases. B) Decreases. C) Remains same. D) Zero. Show Answer Correct Answer: B) Decreases. 15. What happen to the weight of the object if the mass of the Earth decreases one-half from its original mass without changing its radius? A) Does not change. B) Decreases to one half from original weight. C) Decreases to one quarter from original weight. D) Increases double from original weight. Show Answer Correct Answer: B) Decreases to one half from original weight. 16. What would have the greatest gravitational pull on each other? A) Two small objects close together. B) A large and small object far apart. C) Two large objects close together. D) All choices are correct. Show Answer Correct Answer: C) Two large objects close together. 17. What is the relationship between gravitational force and the masses of two objects? A) Gravitational force decreases with the increase in the masses of two objects. B) Gravitational force is inversely proportional to the masses of two objects. C) Gravitational force is independent of the masses of two objects. D) Gravitational force is directly proportional to the product of the masses of two objects. Show Answer Correct Answer: D) Gravitational force is directly proportional to the product of the masses of two objects. 18. A student drops a bowling ball and an apple from a third-story window. Both objects hit the ground at the same time. From the experiment, the student should conclude that A) The apple weighs more than the bowling ball. B) More air friction is acting on the apple than on the bowling ball. C) Gravity pulls on both objects, causing them to fall at the same time. D) None of the above. Show Answer Correct Answer: C) Gravity pulls on both objects, causing them to fall at the same time. 19. The value of the universal gravitational constant G ..... A) Depends on mass of the bodies. B) Varies with distance between the bodies. C) Varies with the medium. D) Is a constant everywhere. Show Answer Correct Answer: D) Is a constant everywhere. 20. An object weighs 10N in air. When immersed fully in water, it weighs only 8N. The weight of liquid displaced by the object will be A) 2N. B) 3N. C) 10N. D) 5N. Show Answer Correct Answer: A) 2N. 21. What is the shape of Earth's orbital path around the Sun according to Kepler's laws? A) Perfectly circular. B) Nearly circular. C) Highly elliptical. D) Square. Show Answer Correct Answer: B) Nearly circular. 22. Mass of the object is 20kg then find total weight of the object. A) 100N. B) 200N. C) 50N. D) NONE OF THESE. Show Answer Correct Answer: B) 200N. 23. A direct relationship between two parts of an equation means: A) One part doesn't beat around the bush when it wants to address something sensitive between the two. B) One part tells the other where to stand, how to use their body language, and deliver lines for a scene to elicit the proper reaction from audiences. C) If one increases in value, the other decreases in value. D) If one increases in value, the other increases in value. Show Answer Correct Answer: D) If one increases in value, the other increases in value. 24. The cgs unit of pressure is A) Kg/m$^{2}$. B) Dyne/cm$^{2}$. C) N/m$^{2}$. D) G/cm$^{2}$. Show Answer Correct Answer: B) Dyne/cm$^{2}$. 25. The weight of a body at the centre of the earth is A) Zero. B) Infinite. C) Same as on the surface of earth. D) None of the above. Show Answer Correct Answer: A) Zero. ← 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