This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Physics Part I > Class 11 Physics (Part I) Chapter 6 Gravitation – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physics (Part I) Chapter 6 Gravitation Quiz 2 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The acceleration due to gravity depends A) Only on the mass of the planet. B) Only on the size of the planet. C) On both the size and mass of the planet. D) None of these. Show Answer Correct Answer: C) On both the size and mass of the planet. 2. An astronaut way out in space is considered to be "weightless" . This is because- A) His mass is so small relative to the earth that gravity doesn't affect him. B) Gravitational force increases greatly over long distances. C) Gravitational force pushes objects away from each other at long distances. D) Objects far away from the earth have less mass. Show Answer Correct Answer: A) His mass is so small relative to the earth that gravity doesn't affect him. 3. According to Newton's law of gravitation, the Earth and the Moon are gravitationally attracted to each other. The more massive Earth attracts the Moon with ..... A) A stronger force than the Moon attracts the Earth. B) A weaker force than the Moon attracts the Earth. C) A force that is sometimes stronger and other times weaker than the Moon attracts the Earth. D) The same force as the Moon attracts the Earth. Show Answer Correct Answer: D) The same force as the Moon attracts the Earth. 4. The strength of the gravitational force between two objects depends on A) Mass and Matter. B) Mass and Weight. C) Mass and Distance. D) Mass and Strength. Show Answer Correct Answer: C) Mass and Distance. 5. Calculate the gravitational force between two objects when they are 0.750m apart. Each object has a mass of 5.00kg. A) 2.96 x 10$^{-7 }$N. B) 2.23 x 10$^{-8 }$N. C) 2.22 x 10$^{-9 }$N. D) 3.00 x 10$^{-6 }$N. Show Answer Correct Answer: A) 2.96 x 10$^{-7 }$N. 6. As the distance between objects increases ..... A) The smaller the force of gravity. B) The larger the force of gravity. C) Mass has no effect on the amount of gravity an object experiences. D) None of the above. Show Answer Correct Answer: A) The smaller the force of gravity. 7. Centripetal force, created by swinging something in a circle, acts in a direction ..... A) Tangent to the circle. B) Toward the center of the circle. C) Along the path of motion. D) Away from the center of the circle. Show Answer Correct Answer: B) Toward the center of the circle. 8. Which of the following best describes the relationship between a planet's orbital speed and its distance from the Sun according to Kepler's second law? A) The speed is constant regardless of distance. B) The speed increases as the distance increases. C) The speed decreases as the distance increases. D) The speed is unrelated to the distance. Show Answer Correct Answer: C) The speed decreases as the distance increases. 9. Two satellites A and B of masses $m_1$ $m_2$ $\left(m_1=2m_2\right)$ $r_1$ $r_2$ $\left(r_1=4r_2\right)$ $T_A$ $T_B$ $\frac{T_A}{T_B}$ A) 4. B) 2. C) 16. D) 8. Show Answer Correct Answer: D) 8. 10. Amanda weighs about 600 N on Earth, but would only weigh about 100 N on the Moon. Which BEST explains why Amanda would weigh less on the Moon than on Earth? A) The circumference of the Moon is smaller than Earth, therefore it has less gravity. B) The lack of air pressure on the Moon weakens the gravitational force of the Moon. C) The mass of the Moon is less than that of Earth, therefore it has a weaker gravitational force. D) None of the above. Show Answer Correct Answer: C) The mass of the Moon is less than that of Earth, therefore it has a weaker gravitational force. 11. Which of the following never changes no matter where in the universe? A) Force. B) Weight. C) Pounds. D) Mass. Show Answer Correct Answer: D) Mass. 12. An object having mass equal to 350 g occupies 200 cm$^{3}$ of the space. When this object is thrown into a river what will be the condition of this object there? (Density of water = 1 g/ cm$^{3}$) A) It will float on the surface of water. B) It will float fully submerged in the liquid. C) It will sink in the liquid. D) It will float partially submerged in the liquid. Show Answer Correct Answer: C) It will sink in the liquid. 13. Two masses m$_{1}$ and m$_{2}$ are separated by a distance R and gravitaional force between them is F. If the distance R is reduced to R/2 the force will now be A) 4X. B) 2X. C) 8X. D) 1/2. E) 1/4. Show Answer Correct Answer: A) 4X. 14. Which of the following describes angular velocity? A) Rate of change of linear velocity. B) Distance traveled per unit time. C) Rate of change of angle with respect to time. D) Acceleration in a circular path. Show Answer Correct Answer: C) Rate of change of angle with respect to time. 15. Archimede's Principle is A) Mass of the water is less than the force of buoyancy. B) The mass of water displaced by the volume of a boat is equal to to the force of buoyancy which pushes upward on the boat causing it to float. C) The volume of water which displaces the buoyancy causing the boat to float. D) Outdated and not used in science anymore. Show Answer Correct Answer: B) The mass of water displaced by the volume of a boat is equal to to the force of buoyancy which pushes upward on the boat causing it to float. 16. A spring does 5.0 J of work on a 0.10-kg ball bearing in a pinball machine. The ball's resulting speed just after leaving the spring is- A) 10 m/s. B) 0.5 m/s. C) 15 m/s. D) 1 m/s. Show Answer Correct Answer: A) 10 m/s. 17. IF THE GRAVITATION EFFECT WERE TO BE LESSER THAN THIS PRESENT EFFECT, WHICH OTHER FORCE WOULD LIKELY TO HAVE ALTERED? A) ELECTROSTATIC FORCE. B) ARCHIMEDES PRINCIPLE. C) VISCOUS EFFECT. D) NONE OF THE ABOVE. Show Answer Correct Answer: B) ARCHIMEDES PRINCIPLE. 18. When and where will two stones, one released from the top of a tower and the other projected vertically upwards from the ground, meet? A) They will meet at the bottom of the tower. B) They will meet in the middle of the tower. C) They will meet at the top of the tower. D) They will not meet. Show Answer Correct Answer: B) They will meet in the middle of the tower. 19. The value of g on earth is. A) $9.8ms^{-2}$. B) $9.8m/s^{-2}$. C) $8.6m/s^{-2}$. D) None of the above. Show Answer Correct Answer: A) $9.8ms^{-2}$. 20. What real-world application relies on the principles of universal gravitation? A) The operation of a wind turbine. B) The design of roller coasters. C) The functioning of a thermometer. D) The calculation of tides. Show Answer Correct Answer: D) The calculation of tides. 21. What is the value of G, the gravitational constant? A) $1.6\\times10^{-9}$. B) $6.02\times10^{23}$. C) $6.67\times10^{-11}$. D) 9.8 m/s. Show Answer Correct Answer: C) $6.67\times10^{-11}$. 22. What does Kepler's first law state about the nature of planetary orbits? A) They are parabolic. B) They are circular. C) They are hyperbolic. D) They are elliptical with the Sun at one focus. Show Answer Correct Answer: D) They are elliptical with the Sun at one focus. 23. The units for mass are ..... A) Kilograms, kg. B) Grams, g. C) Miles, mi. D) Metres, m. Show Answer Correct Answer: A) Kilograms, kg. 24. When a body is partially or wholly immersed in a liquid, the upward force acts on it which is called: A) Buoyant force. B) Presure. C) Area. D) None. Show Answer Correct Answer: A) Buoyant force. 25. Total energy of an orbiting satellite is given by ..... A) $-\\frac{GMm}{2\left(R+h\right)^2}$. B) $\\frac{GMm}{2\left(R+h\right)}$. C) $\\frac{GMm}{2\left(R+h\right)^2}$. D) $-\\frac{GMm}{2\left(R+h\right)}$. Show Answer Correct Answer: D) $-\\frac{GMm}{2\left(R+h\right)}$. 26. The acceleration due to gravity goes on decreasing with ..... in altitude of body from the surface of the Earth. A) Increase. B) Decrease. C) Equal. D) None of the above. Show Answer Correct Answer: A) Increase. 27. An ellipse is drawn around two points called A) Aphelion. B) Axis. C) Foci. D) Perihelion. Show Answer Correct Answer: C) Foci. 28. The gravitational force between two objects is: A) Directly proportional to the distance between them. B) Directly proportional to the square of the distance between them. C) Inversely proportional to the square of the distance between them. D) Inversely proportional to the product of their masses. Show Answer Correct Answer: C) Inversely proportional to the square of the distance between them. 29. Which of the following is the formula for Newton's Law of Gravitation? A) $F = G \frac{m_1-m_2}{r^2}$. B) $F = G \frac{m_1 m_2}{r^2}$. C) $F = G \frac{m_1 m_2}{r}$. D) $F = G \frac{m_1 + m_2}{r^2}$. Show Answer Correct Answer: B) $F = G \frac{m_1 m_2}{r^2}$. 30. The gravitational pull is ..... proportional to the distance between two objects A) Conversely. B) Directly. C) Pyrotechnically. D) Inversely. Show Answer Correct Answer: D) Inversely. 31. The farther a planet is from the sun, the A) Less time it will take to revolve around the sun. B) More time it will take to revolve around the sun. C) Distance does not play a role. D) None of the above. Show Answer Correct Answer: B) More time it will take to revolve around the sun. 32. The gravitational field strength at the surface of Earth is g. Another planet has double the radius of Earth and the same density as Earth. What is the gravitational field strength at the surface of this planet? A) $4g$. B) $2g$. C) $\frac{g}{4}$. D) $\frac{g}{2}$. Show Answer Correct Answer: B) $2g$. 33. A satellite revolves around the earth in an elliptical orbit. Its speed: A) Is the same at all points in the orbit. B) Is greatest when it is closest to the earth. C) Is greatest when it is farthest from the earth. D) Goes on increasing or decreasing continuously depending upon the mass of the satellite. Show Answer Correct Answer: B) Is greatest when it is closest to the earth. 34. If the gravitational force between to objects is 20 N, what is the new force if the BOTH masses are increased by 2 and the distance stay the same? A) 80 N. B) 40 N. C) 5 N. D) 10 N. Show Answer Correct Answer: A) 80 N. 35. According to Newton's Law of Gravitation, what happens to the gravitational force between two objects if the mass of one object is doubled and the distance between them remains the same? A) It doubles. B) It quadruples. C) It halves. D) It remains the same. Show Answer Correct Answer: A) It doubles. 36. A ball is thrown up, the value of g will be? A) Negligible. B) Negative. C) Positive. D) Zero. Show Answer Correct Answer: B) Negative. 37. An object weighs 100 newtons on Earth's surface. When it is moved to a point one Earth radius above Earth's surface, it will weigh A) 400 N. B) 50 N. C) 100 N. D) 25 N. Show Answer Correct Answer: D) 25 N. 38. Newton determined that the pull of Earth's gravity caused both apples and A) The moon to fall toward Earth. B) The moon to move away from Earth. C) The sun to move away from Earth. D) Stars to fall toward Earth. Show Answer Correct Answer: A) The moon to fall toward Earth. 39. A ship uses which principle: A) Newton's law. B) Archimedes. C) Both a and b. D) None. Show Answer Correct Answer: B) Archimedes. 40. What does magnitude mean? A) Size. B) Type. C) Distance. D) Speed. Show Answer Correct Answer: A) Size. 41. According to the universal law of gravitation, how do objects fall towards the Earth? A) In a radial direction. B) In a straight line. C) In a circular motion. D) In a random pattern. Show Answer Correct Answer: A) In a radial direction. 42. As a space ship of constant mass moves farther away from Earth, the strength of the gravitational interaction between the Earth and the space craft A) Increases. B) Decreases. C) There is not enough information to answer. D) Stays the same. Show Answer Correct Answer: B) Decreases. 43. The potential energy of an orbiting satellite is given by ..... A) $-\\frac{GMm}{\left(R+h\right)^3}$. B) $-\\frac{Gm}{\left(R+h\right)}$. C) $-\\frac{GM}{\left(R+h\right)}$. D) $-\\frac{GMm}{\left(R+h\right)}$. Show Answer Correct Answer: D) $-\\frac{GMm}{\left(R+h\right)}$. 44. An object is moving in a circular path with a constant speed. Which of the following statements is true about the net force acting on the object? A) The net force is zero because the speed is constant. B) The net force is in the direction of the object's velocity. C) The net force is directed towards the center of the circle. D) The net force is directed away from the center of the circle. Show Answer Correct Answer: C) The net force is directed towards the center of the circle. 45. To convert km to m ..... A) Divide the km by 100. B) Divide the km by 1000. C) Multiply the km by 100. D) Multiply the km by 1000. Show Answer Correct Answer: D) Multiply the km by 1000. 46. An astronaut orbiting the earth in a circular orbit 120 km above the surface of earth gently drops a spoon out of space-ship. The spoon will: A) Fall vertically down to the earth. B) Move towards the moon. C) Will move along with space-ship. D) Will move in an irregular way then fall down to earth 10. The period of a satellite in a circular orbit around a planet. Show Answer Correct Answer: C) Will move along with space-ship. 47. 2 OBJECTS OF DIFFERENT MASSES FALLING NEAR THE SURFACE OF THE MOON WOULD A) Have same velocities at any instant. B) Experience forces of same magnitude. C) Undergo a change in their inertia. D) Have different acceleration. Show Answer Correct Answer: A) Have same velocities at any instant. 48. If two objects decreases their distance, it ..... the gravitational pull between the two objects A) Has no effect on. B) Decreases. C) Eliminates. D) Increases. Show Answer Correct Answer: D) Increases. 49. Suppose force between two bodies is F. If the distance between them gets multiplied by 4, what will be the new force between them? A) F/ 8 N. B) F/ 4 N. C) F/ 25 N. D) F/ 16 N. Show Answer Correct Answer: D) F/ 16 N. 50. If the objects are closer to each other, the force of attraction ..... A) Increases. B) Disappear. C) No effect. D) Decreases. Show Answer Correct Answer: A) Increases. 51. Two spherical objects have a force of gravitation between them. Find the change in the gravitational attraction Force between them if the first mass doubles in size and the other mass changes to be half as massive as before and distance do not change. A) It does not change the overall force of gravitation. B) It increases by a factor of 2 times stronger. C) It decreases by a factor of 1/2 as weak. D) It increases by a factor of 4 times stronger. Show Answer Correct Answer: A) It does not change the overall force of gravitation. 52. The atmosphere around the earth is held by A) A) Gravity. B) (b) Winds. C) (c) Clouds. D) (d) None of the above. Show Answer Correct Answer: A) A) Gravity. 53. If the distance between two objects is doubled, how does the gravitational force between them change according to Newton's Law? A) It remains the same. B) It becomes half as strong. C) It becomes four times stronger. D) It becomes one-fourth as strong. Show Answer Correct Answer: D) It becomes one-fourth as strong. 54. Brahe's observations suggested, A) Planets travel in a slightly elliptical shape. B) Planets travel in a rectangular shape. C) Planets travel in a perfect circle. D) None of the above. Show Answer Correct Answer: A) Planets travel in a slightly elliptical shape. 55. CHOSE THE CORRECT UNIT FOR THE RELATIVE DENSITY AMONG THE FOLLOWING: A) Kg/cm. B) Kg/km. C) Kg/mm. D) Unitless. Show Answer Correct Answer: D) Unitless. 56. A body weighs 700 gm wt on the surface of the earth. How much will it weigh on the surface of a planet whose mass is $\frac{1}{7}$ A) 200 gm wt. B) 50 gm wt. C) 300 gm wt. D) 400 gm wt. Show Answer Correct Answer: D) 400 gm wt. 57. If horizontal speed of projection is equalto the escape speed at that height $v_{h_{ }}=v_e$ A) Moves in an elliptical orbit round the Earth with the point of projection as perigee. B) Escapes from gravitational influence of Earth transversing aHyperbolic path. C) Travels along a parabolic path and have never returned to the point of projection. D) Moves in a stable circular orbit round the Earth. Show Answer Correct Answer: C) Travels along a parabolic path and have never returned to the point of projection. 58. Find the force due to gravity if the mass of one object is 2300 kg and the mass of a second object is 4000 kg. The distance between the two objects is 0.150 m. A) 6.14 x 10$^{-4}$ N. B) 244 N. C) 2.7 x 10$^{-2}$ N. D) 4.09 x 10$^{-3}$ N. Show Answer Correct Answer: C) 2.7 x 10$^{-2}$ N. 59. The law is universal in the sense thatit is applicable to ..... A) All bodies, whether the bodies are big or small. B) All bodies, whether they are celestial or terrestrial. C) All bodies, whether the bodies are big or small, whetherthey are celestial or terrestrial. D) None of the above. Show Answer Correct Answer: C) All bodies, whether the bodies are big or small, whetherthey are celestial or terrestrial. 60. What happens to the acceleration due to gravity with the increase in altitude from the surface of the earth? (a) Increases (b) Decreases (c) First decreases and then increases (d) Remains same A) D. B) C. C) B. D) A. Show Answer Correct Answer: C) B. ← PreviousNext →Related QuizzesScience QuizzesClass 11 QuizzesClass 11 Physics (Part I) Chapter 6 Gravitation Quiz 1Class 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 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books