This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physics (Part I) Chapter 6 Gravitation – Quiz 16 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 16 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Gravitational force is attractive. Is this force a push or a pull? A) Push. B) Pull. C) All the above. D) None of the above. Show Answer Correct Answer: B) Pull. 2. The value of acceleration due to gravity A) Is same on equator and poles. B) Is least on poles. C) Is least on equator. D) Increase from pole to equator. Show Answer Correct Answer: C) Is least on equator. 3. Which of the following changes would increase the gravitational force between two objects? A) Increase G. B) Increase the mass. C) Increase r. D) Decrease G. Show Answer Correct Answer: B) Increase the mass. 4. The gravitational force between two objects is 20 N. If the distance between them is halved, the force becomes: A) 40 N. B) 80 N. C) 5 N. D) 160 N. Show Answer Correct Answer: B) 80 N. 5. The mass of the earth is $5.972\times10^{24}kg$ $G=6.67\times10^{-11}Nm^2kg^{-2}$ $-7.73\times10^{28}J$ A) $3.80\times10^8m$. B) $3.37\times10^6m$. C) $7.60\times10^4m$. D) $1.90\times10^2m$. Show Answer Correct Answer: A) $3.80\times10^8m$. 6. A 0.55-kg ball, attached to the end of a horizontal cord, is revolved in a circle of radius 1.3 m on a frictionless horizontal surface. If the cord will break when the tension is 75N, what is the maximum speed the ball can have? A) 2.2 m/s. B) 13 m/s. C) 11.1 m/s. D) 9.4 m/s. Show Answer Correct Answer: B) 13 m/s. 7. What is the force of gravitation between the earth and the Sun? A) Depends on the mass of the earth and the Sun. B) Depends on the distance between the earth and the Sun. C) Depends on the density of the earth and the Sun. D) Depends on the temperature of the earth and the Sun. Show Answer Correct Answer: A) Depends on the mass of the earth and the Sun. 8. Two spheres are placed so that their centers are 2.6 m apart. The gravitational force between the two spheres is undefined N. One of the spheres is twice the mass of the other sphere. Find the mass of the LARGER SPHERE! A) 0.185 kg. B) 0.37 kg. C) 0.75 kg. D) 1.5 kg. Show Answer Correct Answer: C) 0.75 kg. 9. The motion of roller coasters depends upon the conversion of potential and kinetic energy. A 100-kg car starts from rest at the top of a hill with a height of 50 m. Which of the following is this car's kinetic energy at the bottom of the hill? A) 150 J. B) 5000 J. C) 49, 000 J. D) 98, 000 J. Show Answer Correct Answer: C) 49, 000 J. 10. If the distance between objects increases, then the gravitational force between the objects will: A) Increase. B) Decrease. C) Remain same. D) None of these. Show Answer Correct Answer: B) Decrease. 11. A planet orbits a star at a certain distance. If the mass of the star is halved, what happens to the gravitational force acting on the planet? A) It remains unchanged. B) It is halved. C) It is doubled. D) It is quadrupled. Show Answer Correct Answer: B) It is halved. 12. This person developed the heliocentric theory and was considered the founder of modern astronomy. A) Aristotle. B) Copernicus. C) Ptolemy. D) Galileo. Show Answer Correct Answer: B) Copernicus. 13. Which of the following is a correct statement about mass and weight? A) Mass varies with location, but weight does not. B) Weight varies with location, but mass does not. C) Both mass and weight vary with location. D) Neither mass nor weight vary with location. Show Answer Correct Answer: B) Weight varies with location, but mass does not. 14. Which will reach the ground first under ideal conditions?Height from which it is dropped is 70m. A) A metal ball of mass 400kg. B) A wooden stick of length 7cm and breadth 5cm. Density of the wood is 1.5g/cc. C) A plastic ball of mass 400kg. D) The plastic and metal balls will reach the ground at the same time, and the wooden stick will fall later. E) All of them will fall at the same time. Show Answer Correct Answer: E) All of them will fall at the same time. 15. What does Kepler's second law imply about the area swept by a planet in its orbit over equal time intervals? A) The area is smaller when the planet is closer to the Sun. B) The area is larger when the planet is closer to the Sun. C) The area is equal regardless of the planet's position in its orbit. D) The area is unrelated to the planet's position in its orbit. Show Answer Correct Answer: C) The area is equal regardless of the planet's position in its orbit. 16. RELATIVE DENSITY OF SILVER IS 10.8 kg/m$^{3}$ THE DENSITY OF WATER IS 10$^{3 }$kg/m$^{3}$ WHAT IS THE DENSITY OF SILVER IN SI UNIT A) 10$^{3}$kg/m$^{3}$. B) 10.8 kg/m$^{3}$. C) 10.8 X10$^{3}$kg/m$^{3}$. D) 10X10$^{3}$kg/m$^{3}$. Show Answer Correct Answer: C) 10.8 X10$^{3}$kg/m$^{3}$. 17. Any object with mass has gravity. A) True. B) Sometimes. C) False. D) Never. Show Answer Correct Answer: A) True. 18. Planet X has twice Earth's mass and three times Earth's radius. The magnitude of the gravitational field near Planet X's surface is most nearly A) 2 N/kg. B) 7 N/kg. C) 10 N/kg. D) 20 N/kg. Show Answer Correct Answer: A) 2 N/kg. 19. The height of a geostationary Satellite from the surface of earth is A) 36000 m. B) 36000 km. C) 3600 m. D) 3600 km. Show Answer Correct Answer: B) 36000 km. 20. If a body is taken to the Moon, its mass will: A) Increase. B) Decrease. C) Remain the same. D) Become zero. Show Answer Correct Answer: C) Remain the same. 21. Why are tides caused? A) Attraction forces exerted on the earth by the moon. B) Gravitational forces exerted on the moon by the earth. C) Attraction forces acting on the moon by the earth. D) Gravitational forces acting on the earth by the moon. Show Answer Correct Answer: D) Gravitational forces acting on the earth by the moon. 22. Which of the following is true about geostationary satellite? A) Above different geographical location. B) The orbital period is longer than 24 hours. C) It does not experience any gravitational pull. D) Its period of rotation is one day. Show Answer Correct Answer: D) Its period of rotation is one day. 23. Why do objects fall at the same rate in a vacuum? A) Due to differences in shape. B) Due to gravity. C) Due to air resistance. D) Due to differences in mass. Show Answer Correct Answer: B) Due to gravity. 24. Out of the following, the only incorrect statement about satellites is: A) A satellite cannot move in a stable orbit in a plane passing through the earth's centre. B) Geostationary satellites are launched in the equatorial plane. C) We can use just one geostationary satellite for global communication around the globe. D) The speed of a satellite increases with an increase in the radius of its orbit. Show Answer Correct Answer: D) The speed of a satellite increases with an increase in the radius of its orbit. 25. Two masses 8000 kg and 1500 kg are 1.5 m apart. Find their gravitational pull. A) 3 N. B) 0.0003 N. C) 3000 N. D) 30 N. Show Answer Correct Answer: B) 0.0003 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