--- type: Quiz title: "Motion Under Gravity Quiz: 47 MCQs for OSSC, CGL, RRB & Govt Exams" canonical: "https://www.easy2crack.com/mcqs/physics/motion-under-gravity-quiz-Azmpjrf2" subject: physics questions: 47 free: true updated: null tags: ["mcq", "practice", "physics"] --- # Motion Under Gravity Quiz: 47 MCQs for OSSC, CGL, RRB & Govt Exams 47 multiple-choice questions with answers. ## Q1. Who propounded the universal law of graviation? A. Newton B. Galileo C. Copernicus D. Einstein **Answer:** a ## Q2. The tendency of a liquid drop to contract and occupy minimum area is due to A. Surface tension B. Viscosity C. Density D. Vapour pressure **Answer:** a ## Q3. Astronauts in space cannot stand erect. This is because, in space A. There is no gravity B. Viscous forces of the atmosphere are very strong C. Solar wind exert and upward force D. Atmospheric pressure is very low **Answer:** a ## Q4. The rain drops are spherical because A. They fall from bit heights B. The air has resistance C. The water has surface tension D. None of the abvoe **Answer:** c ## Q5. Who gave the theroy of gravity? A. Charles Newton B. charles Babage C. Isaac Newton D. John Adams **Answer:** c ## Q6. Oil spreads on water surface because A. Opil is denser than water B. Oil is less dense than water C. Surface tension of oil is more than water D. Surface tension of oil is less than water **Answer:** d ## Q7. If an apple is released from an orbiting spacehip, it will A. Fall towards the Earth B. Move at a lower speed C. Move along with the spaceship at the same speed D. Move at a higher speed **Answer:** c ## Q8. Kerosene oil floats on water because A. Its density is greater than the density of water B. Its density is less than the density of water C. Its density is equal to theat of the density of water D. None of the above **Answer:** c ## Q9. If an object is falling from abvoe, its weight remains A. Zero B. Same C. Change D. None of these **Answer:** b ## Q10. Pressure inside a soap bubble is A. More than atmospheric pressure B. Less than atmospheric pressure C. Equal to atmospheric pressure D. Half of atmospheric pressure **Answer:** a ## Q11. The weight of human body is A. Maximum at the poles B. Same at every place on the Eart's surface C. Maximum at the equator D. More on the mountains the planes **Answer:** a ## Q12. If two bubbles of soap of diferent diameter come in contact with a tube, then what will happen? A. The size of both the bubbles will remain same B. The smaller bubble will become smaller and bigger will become bigger C. The smaller bubble will become larger and larger will become smaller to get the same size D. Both bubbles will burst as soon as they come in contact **Answer:** b ## Q13. Weightlessness is A. Zero gravity B. When gravity decrease C. In vacuum D. None of the above **Answer:** a ## Q14. For Which one of the following capillarity is not the only reason? A. Blotting of ink B. Rising of underground water C. Spread of water drop on a cotton cloth D. Rissing of water from the roots of a plant to its foliage **Answer:** d ## Q15. If the gravitational force of the Earth suddenly disappears, which are of the following will be the dorrect consequence? A. The weight of an object will become zero but the mass will remain the same B. The mass of the object will become zero but the weight will remain the same C. both the mass and the weight of the objecct will become zero D. The mass of the object will increase **Answer:** a ## Q16. With the rise of temperature, the visocity of liquid A. Increases B. Decreases C. Remains unchanged D. May increase or decrease depending on nature of liquid **Answer:** b ## Q17. An artificial satellite orbiting around the Earth does not fall down. This is so because the attraction of Earth. A. Does not exist at such distance B. Is neutralized by the attraction of the Moon C. Provides the necessary speed for its steady motion D. Provides the necessary acceleration for its motion **Answer:** d ## Q18. Kerosene rises in the wock of the stove is due to A. Osmosis B. Diffusion C. Surface tension D. Biogen contraction **Answer:** c ## Q19. A Geosynchronous satelite continuously active in its orbit due to centrifugal force which is obtained by A. The rocket engine that propelled the satelite B. The gravitational force on the satellite bu the Earth C. The gravitational force on the satellite by the Sun D. The gravitational force on the Earth by satellite **Answer:** b ## Q20. In a capillary tube a fluid rises more as compared to water, it is due to A. Fluid is more viscous than that of water B. Temperature of fluid is more than that of water C. Surface tension of fluid is less than that of water D. Surface tension of fluid is more than that of water **Answer:** d ## Q21. Satellite is kept movie in its orbit around the Earth; it is due to A. Centrifugal force B. Centripetal force C. Gravitational force or lack of it some other forces D. Some other forces **Answer:** b ## Q22. When an air bubble at the bottom of lake rises to the top, it will A. Increased in size B. Decreased in size C. Maintain its size D. Flatter into a disc like shape **Answer:** a ## Q23. If a person sitting in a lift, then when will he feel that his weight gets increased? A. When the elevator going upward expeditiously B. When the elevator going down expeditiously C. Going upward with constant velocity D. Going downward with constant velocity **Answer:** a ## Q24. While travelling by plane, the ikn of the pen starts to come out A. Due to decrease in air pressure B. Due to increase in ait pressure C. Due to increase in volume of ink D. Due to excessive load **Answer:** a ## Q25. The time period of a pendulum A. Depends on the mass B. Depends on its length C. Depends on time D. Depends on temperature **Answer:** b ## Q26. In automobile hydraulic brakes work on A. Archimedes Principle B. Newton's law of motion C. Bernoulli's Principle D. Pascal's Law **Answer:** d ## Q27. Why do pendulum checks usually lose time in summer? A. Due to longer days in summer B. Due to friction caused by coils C. The length of the pendulum increases, increasing the time period of unit oscillation D. The weight of the pendulum change in summer **Answer:** c ## Q28. A sudden fall in barometer rading indicates that the weather will be A. Stormy weather B. Rainy waether C. Cool dry weather D. Hot and humid weather **Answer:** a ## Q29. A girl is swinging on a swing in sitting position. When the girl stands up, the period of the swing will A. Be shorter B. Be longer C. Depends on the height of the girl D. Not change **Answer:** a ## Q30. The surface of a lake is frozen in severe wither, but the water at its bottom is still liquid. Why? A. Ice is a bad conductor of heat B. Since, the surface of the lake is at the same temperature as the ait, no heat is lost C. The density of water is maximum at 4C D. None of the above **Answer:** c ## Q31. A pendulum clock can run faster in A. Summer B. Winter C. Spring season D. Rainy season **Answer:** b ## Q32. In cold weather, aquatic animals survive even when water at the top layer of the lake freezes into ice because. A. They can breathe in ice B. They have enough of accumulated oxygen inside them C. Their body structure is such that they can survive without oxygen D. Water has the highest density at 4C so underneath the top layer of ice there is a lyer of water **Answer:** d ## Q33. Earth's escape velocity is A. 15.0 km/s B. 21.1 ks/s C. 7.0 km/s D. 11.2 km/s **Answer:** d ## Q34. Fish can survive in a frozen lake because A. Fist are warm blooded animals B. Fish bibernate in ice C. Water near the bottom does not freeze D. Ice is a good conductor of heat **Answer:** c ## Q35. What will happen if an object is thrown into space with the speed of 8 km/s. A. The objectws will go into space B. It will return to Earth C. It will rotate into the orbit of Earth D. It will burst out **Answer:** b ## Q36. the density of water will reach its maximum value at the temperature of A. 0C B. 4C C. 50C D. 100c **Answer:** b ## Q37. At which temperature density of water is maximum? A. 4C B. 0C C. -4C D. -8C **Answer:** a ## Q38. Why does an iron nail float on mercury while it sinks in water? A. Due to less chemical interaction of iron with mercury than it is with water B. Iron is heavier than water and lighter than mercury C. iron has greater densityh than water and lesser than mercury D. Mercury is heavier than water **Answer:** c ## Q39. A needle sinks in water wheras a ship made of iron floats on it because A. The edge of the needle is pointed B. The ship is flat C. The ship driver, by power flat engine D. Specific gravity of the needle is greater than that of water displaced by it **Answer:** d ## Q40. While lifting a bucket of water from a well, we feel that the bucket A. Becomes heavier above the surface of water B. Becomes lighter above the surface of water C. Loses stability on coming out of the water D. Has gained mass on coming out of water **Answer:** a ## Q41. The separation of cream from milk by churning is due to A. Gravitational force B. Cohesive force C. Centrifugal force D. None of the above **Answer:** c ## Q42. The clouds float in the atmosphere because of their low A. Temperature B. Velocity C. Pressure D. Density **Answer:** d ## Q43. Which of the following elements was fist produced artificially? A. Neptunium B. Plutonium C. Francium D. Technetium **Answer:** d ## Q44. An ice cube is floating in a glass of water. What happens to the water level when the ice melts? It A. Rises B. Falls C. Remains the same D. First rises and then falls **Answer:** c ## Q45. A body floats at 4C water. If temperature reaches 100C, then A. The body will sink B. No change C. More part of the body will submerge D. The body will float freely **Answer:** a ## Q46. Why it is easier to swim in the sea than in a river? A. The sea water is salty B. The sea water is deep C. The sea wtaer is heavier D. The sea water is lighter **Answer:** c ## Q47. When a ship enters a sea from a river, what happens? A. It rises a little B. It remains at the same level C. It sinks a little D. It immeresed in the bottom of the sea **Answer:** a --- Source: https://www.easy2crack.com/mcqs/physics/motion-under-gravity-quiz-Azmpjrf2 Site: https://www.easy2crack.com · Machine index: https://www.easy2crack.com/llms.txt · MCP: https://www.easy2crack.com/mcp