Archimedes Principle
Science

In this article, we will discuss Questions and Answers on Archimedes Principles in Physics. These questions will help you revise the topic and give you confidence. So, let’s begin.

Archimedes’ principles in physics refer to two fundamental principles attributed to the ancient Greek mathematician and scientist Archimedes of Syracuse. These principles, known as Archimedes’ principles, have had a profound influence on the field of physics and engineering. Here are the two key principles:

  1. Archimedes’ Principle:
  • Statement: Archimedes’ principle states that when a body is partially or wholly submerged in a fluid (liquid or gas), it experiences an upward buoyant force equal to the weight of the fluid displaced by the body.
  • Explanation: This principle explains why objects appear to weigh less when submerged in a fluid. The buoyant force opposes the force of gravity, reducing the effective weight of the object. The greater the volume of fluid displaced by the object, the greater the buoyant force acting on it. This principle is used to explain the buoyancy of ships, submarines, and hot air balloons, among other applications.

 

1. Archimedes’ Principle is related to:

  1. A) Gravity
    B) Water
    C) Buoyancy
    D) Sound
    Answer: C) Buoyancy

2. Who discovered Archimedes’ Principle?

  1. A) Isaac Newton
    B) Albert Einstein
    C) Archimedes
    D) Galileo
    Answer: C) Archimedes

3. Archimedes’ Principle states that an object submerged in a fluid experiences a force that is:

  1. A) Upward
    B) Downward
    C) Leftward
    D) Rightward
    Answer: A) Upward

4. What does Archimedes’ Principle help to determine?

  1. A) Temperature
    B) Velocity
    C) Density
    D) Buoyant Force
    Answer: D) Buoyant Force

5. If the weight of displaced fluid is 5 N, what is the buoyant force on the submerged object?

  1. A) 1 N
    B) 3 N
    C) 5 N
    D) 7 N
    Answer: C) 5 N

6. A floating object displaces a weight of fluid equal to its own:

  1. A) Volume
    B) Density
    C) Weight
    D) Shape
    Answer: C) Weight

7. The density of a submerged object is compared to the density of the fluid to determine whether the object will:

  1. A) Float
    B) Sink
    C) Dissolve
    D) A and B
    Answer: D) A and B

8. If an object is completely submerged in a fluid, what will the buoyant force depend on?

  1. A) Shape
    B) Volume of the object
    C) Color
    D) Taste
    Answer: B) Volume of the object

9. Archimedes’ Principle applies to:

  1. A) Only Liquids
    B) Only Gases
    C) Both Liquids and Gases
    D) Neither Liquids nor Gases
    Answer: C) Both Liquids and Gases

10. When an object floats, the buoyant force is equal to the:

  1. A) Density of the Object
    B) Volume of the Object
    C) Weight of the Object
    D) Height of the Object
    Answer: C) Weight of the Object

11. A ship floats on water because:

  1. A) It’s shaped like a boat
    B) The weight of the water displaced is equal to the weight of the ship
    C) It’s made of wood
    D) It’s painted
    Answer: B) The weight of the water displaced is equal to the weight of the ship

12. If the density of an object is greater than the density of the fluid, the object will:

  1. A) Float
    B) Sink
    C) Move sideways
    D) Spin
    Answer: B) Sink

13. A solid piece of iron sinks in water, but a large iron ship floats because:

  1. A) Iron ships are magical
    B) Iron ships are painted
    C) The shape of the ship causes it to displace more water
    D) The ship is hollow inside
    Answer: C) The shape of the ship causes it to displace more water

14. Archimedes’ Principle can be used to find an object’s:

  1. A) Color
    B) Taste
    C) Smell
    D) Density
    Answer: D) Density

15. An object will float in a fluid if its density is:

  1. A) Equal to the fluid’s density
    B) Less than the fluid’s density
    C) Greater than the fluid’s density
    D) Unrelated to the fluid’s density
    Answer: B) Less than the fluid’s density

16. The upward force exerted by a fluid on a submerged object is called:

  1. A) Gravitational Force
    B) Frictional Force
    C) Buoyant Force
    D) Magnetic Force
    Answer: C) Buoyant Force

17. When you are swimming, the sensation of lightness is due to:

  1. A) Water’s blue color
    B) Fish in the water
    C) Buoyant Force
    D) Waves
    Answer: C) Buoyant Force

18. If you weigh less in water than in air, this can be explained by:

  1. A) A diet
    B) A magic trick
    C) Archimedes’ Principle
    D) The type of water
    Answer: C) Archimedes’ Principle

19. The more fluid an object displaces, the ______ the buoyant force.

  1. A) Lesser
    B) Greater
    C) More colorful
    D) Louder
    Answer: B) Greater

20. An iceberg floats on water because:

  1. A) It is white
    B) It’s made of ice
    C) The majority of it is submerged and displaces water equal to its weight
    D) It’s cold
    Answer: C) The majority of it is submerged and displaces water equal to its weight

21. When an object is partially submerged, the volume of displaced fluid is equal to the:

  1. A) Volume of the object
    B) Volume of the submerged part
    C) Volume of the fluid
    D) None of the above
    Answer: B) Volume of the submerged part

22. An object is floating in a liquid. If the liquid’s density is increased, the object will:

  1. A) Float higher
    B) Sink lower
    C) Dissolve
    D) Turn a different color
    Answer: A) Float higher

23. The principle that explains why hot air balloons rise is:

  1. A) Archimedes’ Principle
    B) Murphy’s Law
    C) Newton’s Third Law
    D) The Law of Thermodynamics
    Answer: A) Archimedes’ Principle

24. When the buoyant force is greater than the weight of the object, the object will:

  1. A) Sink
    B) Float
    C) Remain stationary
    D) Vanish
    Answer: B) Float

25. The weight of a completely submerged object appears to be less due to:

  1. A) Magic
    B) Buoyant Force
    C) The color of the water
    D) The temperature of the water
    Answer: B) Buoyant Force

26. A steel ball sinks in water but a steel ship floats because of:

  1. A) The material of the steel
    B) The buoyant force
    C) The shape and structure of the ship
    D) The location of the water
    Answer: C) The shape and structure of the ship

27. The buoyant force acts in the opposite direction to the force of:

  1. A) Wind
    B) Gravity
    C) Friction
    D) Magnetism
    Answer: B) Gravity

28. If the buoyant force is equal to the weight of the object, the object will:

  1. A) Float
    B) Sink
    C) Remain in equilibrium
    D) Disintegrate
    Answer: C) Remain in equilibrium

29. Archimedes’ Principle is a statement about the:

  1. A) Universe
    B) Human mind
    C) Balance of forces on an object in a fluid
    D) History of science
    Answer: C) Balance of forces on an object in a fluid

30. An object will sink until it displaces a volume of fluid equal to its:

  1. A) Weight
    B) Mass
    C) Height
    D) Width
    Answer: A) Weight

 

31. An object floats in a liquid if its density is:

  1. A) Equal to the liquid’s density
    B) More than the liquid’s density
    C) Less than the liquid’s density
    D) Unaffected by the liquid’s density
    Answer: C) Less than the liquid’s density

32. A balloon filled with helium floats because:

  1. A) Helium is magical
    B) Helium is lighter than air
    C) Helium is a noble gas
    D) Helium is invisible
    Answer: B) Helium is lighter than air

33. A submarine controls its depth by adjusting:

  1. A) Color
    B) Sound
    C) Buoyancy
    D) Speed
    Answer: C) Buoyancy

34. If an object is more dense than the liquid it is in, it will:

  1. A) Float at the surface
    B) Float in the middle
    C) Sink to the bottom
    D) Evaporate
    Answer: C) Sink to the bottom

35. The buoyant force is equal to the weight of the:

  1. A) Object
    B) Fluid displaced by the object
    C) Fluid container
    D) Air above the fluid
    Answer: B) Fluid displaced by the object

36. Archimedes’ Principle can be applied to calculate the density of:

  1. A) Solids
    B) Liquids
    C) Gases
    D) All of the above
    Answer: D) All of the above

37. If a ship sails from freshwater into saltwater, it will:

  1. A) Sink deeper
    B) Float higher
    C) Remain at the same level
    D) Capsize
    Answer: B) Float higher

38. Archimedes discovered his principle while:

  1. A) On a boat
    B) Taking a bath
    C) Eating dinner
    D) Sleeping
    Answer: B) Taking a bath

39. The force exerted by a fluid on a submerged object is always directed:

  1. A) Downward
    B) Upward
    C) Sideways
    D) In a random direction
    Answer: B) Upward

40. When you submerge a sponge in water, it doesn’t sink because:

  1. A) It’s soft
    B) It’s full of holes and traps air
    C) It’s a living organism
    D) It’s yellow
    Answer: B) It’s full of holes and traps air

41. The buoyant force on an object in a fluid depends on the fluid’s:

  1. A) Smell
    B) Taste
    C) Density
    D) Color
    Answer: C) Density

42. A cork floats on water because:

  1. A) It’s round
    B) It’s made from trees
    C) Its density is less than water’s density
    D) It’s used in wine bottles
    Answer: C) Its density is less than water’s density

43. An object’s apparent weight in a fluid is its actual weight minus:

  1. A) Its density
    B) Its volume
    C) The buoyant force
    D) The gravitational force
    Answer: C) The buoyant force

44. The buoyant force on a submerged object does NOT depend on:

  1. A) The volume of the object
    B) The density of the fluid
    C) The object’s weight
    D) The depth of the object in the fluid
    Answer: D) The depth of the object in the fluid

45. If the weight of the fluid displaced is less than the weight of the object, the object will:

  1. A) Float on the surface
    B) Float in the middle
    C) Sink
    D) Float above the fluid
    Answer: C) Sink

46. A life jacket helps you float due to:

  1. A) Its color
    B) Its material that traps air
    C) Its brand
    D) Its price
    Answer: B) Its material that traps air

47. When a boat is loaded with cargo, it displaces ______ water.

  1. A) Less
    B) More
    C) The same amount of
    D) No
    Answer: B) More

48. If you want to increase the buoyant force on an object, you should:

  1. A) Decrease the density of the fluid
    B) Increase the density of the fluid
    C) Change the color of the fluid
    D) Change the shape of the object
    Answer: B) Increase the density of the fluid

49. A swimmer can float on water because of:

  1. A) Their swimming skills
    B) Their outfit
    C) Their breath-holding capacity
    D) The buoyant force
    Answer: D) The buoyant force

50. The principle that explains why ships made of steel can float is:

  1. A) The Principle of Relativity
    B) The Uncertainty Principle
    C) Archimedes’ Principle
    D) The Law of Conservation of Energy
    Answer: C) Archimedes’ Principle 

51. If an object is floating in a fluid, the buoyant force is ______ the weight of the object.

  1. A) Less than B) Equal to C) Greater than D) Not related to

Answer: B) Equal to

52. The reason icebergs float on water is:

  1. A) They are white B) They are cold C) Their density is less than water D) They come from the Arctic

Answer: C) Their density is less than water

53. When a body is submerged in a fluid, it loses an amount of weight equal to:

  1. A) The weight of the body B) The weight of the fluid displaced C) The density of the fluid D) The volume of the body

Answer: B) The weight of the fluid displaced

54. A ship made of heavy steel floats on water because:

  1. A) It is painted B) It has engines C) Its shape allows it to displace enough water D) It is made by skilled workers

Answer: C) Its shape allows it to displace enough water

55. The principle that helps swimmers float on water is:

  1. A) Newton’s Third Law B) Archimedes’ Principle C) The Law of Thermodynamics D) Einstein’s Theory of Relativity Answer: B) Archimedes’ Principle

56. An object submerged halfway in a liquid is experiencing:

  1. A) Half the possible buoyant force B) Double the possible buoyant force C) The full possible buoyant force D) No buoyant force

Answer: A) Half the possible buoyant force

57. If an object sinks in a liquid, its density must be:

  1. A) Equal to the liquid’s density B) Less than the liquid’s density C) Greater than the liquid’s density D) Unrelated to the liquid’s density Answer: C) Greater than the liquid’s density

58. A hydrometer is an instrument used to measure:

  1. A) Wind speed B) Water temperature C) Sound in water D) Density of liquids

Answer: D) Density of liquids

59. Which factor does NOT affect the buoyant force on a submerged object?

  1. A) Density of the fluid B) Volume of the object C) Depth of the object in the fluid D) Weight of the object

Answer: C) Depth of the object in the fluid

60. A floating object displaces a volume of fluid equal to its:

  1. A) Volume B) Density C) Weight D) Shape

Answer: C) Weight

61. If an object is completely submerged in a fluid, the buoyant force depends on:

  1. A) The object’s color B) The object’s weight C) The weight of the fluid displaced D) The object’s smell

Answer: C) The weight of the fluid displaced

62. The buoyant force is greater in:

  1. A) Water B) Oil C) A denser fluid D) A lighter fluid

Answer: C) A denser fluid

63. The upward force acting on a body submerged in a fluid is called:

  1. A) Gravity B) Weight C) Tension D) Buoyant force

Answer: D) Buoyant force

64. A fish is able to adjust its depth in water by altering the amount of gas in its:

  1. A) Gills B) Scales C) Swim bladder D) Fins

Answer: C) Swim bladder

65. Archimedes’ principle helps in determining the purity of:

  1. A) Air B) Precious metals C) Plants D) Food

Answer: B) Precious metals

66. The buoyant force on an object depends on the:

  1. A) Shape of the object B) Color of the object C) Material of the object D) Volume of fluid displaced by the object

Answer: D) Volume of fluid displaced by the object

67. Archimedes’ Principle is applicable to:

  1. A) Liquids only B) Gases only C) Both liquids and gases D) Neither liquids nor gases

Answer: C) Both liquids and gases

68. If an object floats, the buoyant force is _______ the gravitational force on the object.

  1. A) Equal to B) Less than C) Greater than D) Unrelated to

Answer: A) Equal to

69. A helium-filled balloon rises in the air because:

  1. A) Helium is a gas B) Helium is less dense than air C) Helium is a noble gas D) Helium is a colorless gas

Answer: B) Helium is less dense than air

70. The loss of weight of a solid immersed in a liquid is equal to:

  1. A) The volume of the solid B) The weight of the liquid C) The weight of the liquid displaced D) The density of the solid

Answer: C) The weight of the liquid displaced

71. A floating body displaces its own:

  1. A) Weight of fluid B) Volume of fluid C) Density of fluid D) Surface area of fluid

Answer: A) Weight of fluid

72. If an object is immersed in a liquid and weighed, the loss of weight is due to:

  1. A) Archimedes’ Principle B) Gravity C) Friction D) Magnetic force

Answer: A) Archimedes’ Principle

73. When an object is partially submerged, the volume of the liquid displaced is equal to the:

  1. A) Volume of the object submerged B) Weight of the object submerged C) Density of the object submerged D) Surface area of the object submerged

Answer: A) Volume of the object submerged

74. The apparent loss in weight of a body immersed in a fluid is used to calculate:

  1. A) Its volume B) Its density C) The buoyant force D) Both A and B

Answer: D) Both A and B

75. A ship floats on water because its average density is:

  1. A) Equal to the water’s density B) Greater than the water’s density C) Less than the water’s density D) Independent of the water’s density Answer: C) Less than the water’s density

76. If a boat displaces 2000 kg of water, the buoyant force on the boat is:

  1. A) 2000 N B) Less than 2000 N C) More than 2000 N D) 0 N

Answer: A) 2000 N

77. The buoyant force acts in the opposite direction to:

  1. A) The motion of the object B) The force of friction C) The force of gravity D) The applied force

Answer: C) The force of gravity

78. A piece of ice floats on water because:

  1. A) It is transparent B) It is cold C) Its density is less than that of water D) It is solid

Answer: C) Its density is less than that of water

79. Archimedes’ Principle is used in the design of:

  1. A) Airplanes B) Ships C) Cars D) Bicycles

Answer: B) Ships

80. A hot air balloon rises in the air because the air inside the balloon:

  1. A) Is hot B) Is colored C) Has less density than the surrounding air D) Is more humid than the surrounding air

Answer: C) Has less density than the surrounding air

 

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