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 (B)</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 (C)</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 (A)</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 (C)</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. (C)</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. (C)</p> Signup and view all the answers

What is the SI unit of density?

<p>kg m−3 (D)</p> Signup and view all the answers

Which quantity is represented by the Greek letter ρ?

<p>Density (C)</p> Signup and view all the answers

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

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

What is the relative density of a substance defined as?

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

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

<p>Decreases with increase in depth (B)</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 (B)</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. (D)</p> Signup and view all the answers

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