This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 6 Gravitation – Quiz 26 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 26 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. In a binary star system, if the distance between the two stars is reduced to one-third, how does the gravitational force between them change? A) It becomes nine times stronger. B) It becomes three times stronger. C) It becomes one-third as strong. D) It remains the same. Show Answer Correct Answer: A) It becomes nine times stronger. 2. Kepler's third law states A) The orbit of a planet around the sun is an ellipse, with the sun at one focus. B) The semimajor axis is equal to the planet's average distance from the sun. C) The square of the orbital period of a planet is proportional to its orbital radius. D) None of these answers is correct. Show Answer Correct Answer: C) The square of the orbital period of a planet is proportional to its orbital radius. 3. Predict the effect on the gravitational force if the distance between two orbiting planets is reduced by a factor of 3. A) The force increases by a factor of 3. B) The force increases by a factor of 9. C) The force decreases by a factor of 3. D) The force decreases by a factor of 9. Show Answer Correct Answer: B) The force increases by a factor of 9. 4. If the diameter of mars is 6760 km and mass $\frac{1}{10}th$ $9.8ms^{-2}$ A) $34.8ms^{-2}$. B) $2.48ms^{-2}$. C) $3.48ms^{-2}$. D) $28.4ms^{-2}$. Show Answer Correct Answer: C) $3.48ms^{-2}$. 5. What is responsible for the movement of objects in space? A) Mass. B) Gravity. C) Orbital VelocityTagsNGSS.HS-PS2-4NGSS.HS-ESS1-4. D) None of the above. Show Answer Correct Answer: B) Gravity. 6. Two students are sitting 1.50m apart. One student has a mass of 70.0kg and the other has a mass of 52.0kg. What is the gravitational force between them? A) 1.62x10$^{-7}$N. B) 9.81x10$^{-7}$N. C) 1.04x10$^{-7}$N. D) 6.67x10$^{-7}$N. Show Answer Correct Answer: C) 1.04x10$^{-7}$N. 7. How does Newton's Law of Gravitation explain the orbits of planets around the sun? A) Planets are attracted to the sun by a force that decreases with distance. B) Planets are repelled by the sun, keeping them in orbit. C) Planets move in straight lines due to gravitational pull. D) Planets are stationary due to gravitational balance. Show Answer Correct Answer: A) Planets are attracted to the sun by a force that decreases with distance. 8. WEIGHT ION THE EARTH IS 600N THEN FIND TOTAL WEIFGT ON MOON A) 100N. B) 400N. C) 450N. D) 500N. Show Answer Correct Answer: A) 100N. 9. Two brass balls of masses 2 kg and 0.5 kg experience a force of attraction of 2 N. When the distance between their centres is doubled, the force of attraction is A) 1/2 N. B) 1/4 N. C) 1 N. D) 2 N. Show Answer Correct Answer: A) 1/2 N. 10. What happens to gravity between two objects if their distance gets further apart? A) Weaker. B) Stronger. C) Does not change. D) None of the above. Show Answer Correct Answer: A) Weaker. 11. Anika and David are conducting an experiment to measure gravitational forces. They find that the gravitational force between two objects is $3.0 \times 10^{-8} \, \text{N}$ A) $1.5 \times 10^{-8} \, \text{N}$. B) $7.5 \times 10^{-9} \, \text{N}$. C) $3.0 \times 10^{-8} \, \text{N}$. D) $7.5 \times 10^{-8} \, \text{N}$. Show Answer Correct Answer: B) $7.5 \times 10^{-9} \, \text{N}$. 12. If somehow Earth started to shrink in size but kept the same mass, would would happen to the value of g on Earth's surface? A) Increase. B) Decrease. C) All the above. D) None of the above. Show Answer Correct Answer: A) Increase. 13. A ball is thrown upward with an initial speed of 25 m/s. What is its speed after 2 seconds? A) 5 m/s (upward). B) 15 m/s (upward)). C) 25 m/s (upward). D) 5 m/s (downward. Show Answer Correct Answer: A) 5 m/s (upward). 14. As the distance between two objects increases, the attraction between them ..... A) Increases. B) Decreases. C) Stays the same. D) None of the above. Show Answer Correct Answer: B) Decreases. 15. The gravitational force between two identical masses m separated by a distance r is A) Gm$^{2}$/r. B) Gm$^{2}$/r$^{2}$. C) Gm/r$^{2}$. D) Gm$^{2}$r$^{2}$. Show Answer Correct Answer: B) Gm$^{2}$/r$^{2}$. 16. Which force is always attractive? A) Tension. B) Magnetic. C) Electric. D) Gravitational. Show Answer Correct Answer: D) Gravitational. 17. Describe how gravitational potential energy is converted to kinetic energy in free fall. A) Kinetic energy is converted to gravitational potential energy during free fall. B) Gravitational potential energy is converted to kinetic energy as an object falls, increasing its speed and energy of motion. C) Gravitational potential energy remains constant as the object falls. D) An object gains gravitational potential energy as it falls, slowing down. Show Answer Correct Answer: B) Gravitational potential energy is converted to kinetic energy as an object falls, increasing its speed and energy of motion. 18. The moon falls toward Earth in the sense that it falls A) With an acceleration of 10 m/s2, as apples fall on Earth. B) With an acceleration greater than 10 m/s2. C) Beneath the straight-line path it would take without gravity. D) Above the straight-line path it would take without gravity. Show Answer Correct Answer: C) Beneath the straight-line path it would take without gravity. 19. The force of attraction due to gravity between two objects is F'. If the distance between the two objects doubles and the mass of one object triples, the new gravitational force between them will be- A) 0.5F'. B) 0.75F'. C) 1.5F'. D) 2.5F'. Show Answer Correct Answer: B) 0.75F'. 20. What is $\frac{4x}{3^2x}$ A) 4/3. B) 4/9. C) 9/4. D) 16/9. Show Answer Correct Answer: B) 4/9. 21. As distance increases, value of gravitational field strength A) Also increases. B) Decreases. C) Remains constant. D) May increase or decrease. Show Answer Correct Answer: B) Decreases. 22. If an object has MORE ..... , it will have MORE gravitational force. A) Mass. B) Distance. C) All the above. D) None of the above. Show Answer Correct Answer: A) Mass. 23. What type of orbit does the Earth have? This was proven by astronomer Johannes Kepler. A) An elliptical orbit around the moon. B) An elliptical orbit around the Sun. C) A circular orbit around the moon. D) A circular orbit around the Sun. Show Answer Correct Answer: B) An elliptical orbit around the Sun. 24. Two objects of different masses falling freely near the surface of moon would A) Have same velocities at any instant. B) Have different accelerations. C) Experience forces of same magnitude. D) Undergo a change in their inertia. Show Answer Correct Answer: A) Have same velocities at any instant. 25. Why does a sheet of paper fall slower than one that is crumpled into a ball? A) Because the sheet of paper has a larger surface area. B) Because the sheet of paper has a smaller surface area. C) Because the sheet of paper is lighter. D) Because the sheet of paper is denser. Show Answer Correct Answer: A) Because the sheet of paper has a larger surface area. ← 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