Upthrust and Buoyancy Quiz
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Questions and Answers

Which force is responsible for the tendency of a liquid to exert an upward force on any object immersed in it?

  • Buoyant force (correct)
  • Tension force
  • Frictional force
  • Weight force

    • Under what conditions will a body float when submerged in water?

  • When tension force is greater than weight
  • When weight is greater than buoyant force
  • When buoyant force is greater than or equal to weight (correct)
  • When frictional force is greater than buoyant force

    • What is the characteristic property of upthrust related to the volume of the body submerged in fluid?

  • Larger the volume of the body, lower the upthrust
  • Smaller the volume of the body, greater the upthrust
  • Volume of the body does not affect upthrust
  • Larger the volume of the body, greater the upthrust (correct)

    • What does the upthrust act on, in the upward direction, in a fluid?

    <p>The body's center of buoyancy</p> Signup and view all the answers

    What is the reason for upthrust in a liquid kept in a vessel?

    <p>Uniform pressure exerted by the liquid in all directions</p> Signup and view all the answers

    When will a body sink when submerged in water?

    <p>When buoyant force is less than weight</p> Signup and view all the answers

    Which principle states that when an object is immersed wholly or partially in a fluid, it experiences an upthrust equal to the weight of the fluid displaced by it?

    <p>Archimedes’ principle</p> Signup and view all the answers

    What is the SI unit of density?

    <p>kg/m^3</p> Signup and view all the answers

    What happens to the density of a substance with a decrease in temperature?

    <p>It increases</p> Signup and view all the answers

    What does Archimedes’ principle state about the buoyant force acting on an object immersed in a fluid?

    <p>It is equal to the weight of the fluid displaced by the object</p> Signup and view all the answers

    What is the characteristic property of upthrust related to the volume of the body submerged in a fluid?

    <p>It increases with an increase in volume</p> Signup and view all the answers

    What is the relative density of a substance?

    <p>The ratio of its density to that of water</p> Signup and view all the answers

    Which law states that the pressure at a point in a liquid is the same in all directions?

    <p>Pascal's Law</p> Signup and view all the answers

    What does the density of a substance depend on?

    <p>Both its mass and volume</p> Signup and view all the answers

    What is the buoyant force acting on an object immersed in a fluid equal to?

    <p>The weight of the fluid displaced by the object</p> Signup and view all the answers

    When does a body float when submerged in water?

    <p>When its density is less than that of water</p> Signup and view all the answers

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