Buoyancy, Upthrust, and Floatation Quiz
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Questions and Answers

What is the upward force exerted by a liquid on an object immersed in it called?

  • Weight force
  • Buoyant force (correct)
  • Tension force
  • Frictional force
  • When FB > W, what will happen to a body in a fluid?

  • It will float with no part submerged
  • It will float with a part submerged (correct)
  • It will completely sink
  • It will remain stationary
  • What is the condition for a body to completely float in a fluid?

  • FB = W (correct)
  • FB < W
  • FB > W
  • No specific condition
  • What happens if the upthrust is less than the weight of a body immersed in a fluid?

    <p>The body will sink</p> Signup and view all the answers

    Where does the upthrust act on the body immersed in fluid?

    <p>Upwards at the centre of gravity of the displaced fluid</p> Signup and view all the answers

    What characteristic property affects the upthrust exerted by a fluid on a submerged body?

    <p>Volume of the body submerged in fluid</p> Signup and view all the answers

    According to Archimedes’ principle, when an object is immersed wholly or partially in a fluid, it experiences an upthrust which is equal to the:

    <p>Weight of the fluid displaced by it</p> Signup and view all the answers

    In the context of Archimedes’ principle, which statement about gases is true?

    <p>Gases exert a negligible buoyant force on objects.</p> Signup and view all the answers

    In Experiment 1 for verifying Archimedes’ principle, what conclusion can be drawn when the solid cylinder A loses weight after being immersed in water?

    <p>The buoyant force acting on cylinder A is equal to the weight of water displaced by it.</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

    Which quantity is represented by the Greek letter ρ?

    <p>Density</p> Signup and view all the answers

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

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

    What is the relative density of a substance defined as?

    <p>Mass per unit volume</p> Signup and view all the answers

    What does the pressure at a point in a liquid do?

    <p>Decreases with increase in depth</p> Signup and view all the answers

    What force is created on a block immersed in liquid due to pressure difference between the lower and upper faces?

    <p>Net upward force</p> Signup and view all the answers

    What does Archimedes’ principle state about the buoyant force acting on an object?

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

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