Capillarity Phenomenon and Capillary Fall Explanation
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Questions and Answers

What is the expression for capillary rise or fall?

  • $r^2h$
  • $r^2h\rho - 2T/R$
  • $r^2hg$
  • $rh - gT(2 \cos\theta)$ (correct)

    • What is the factor that must be equal and opposite to the vertical component of the force due to surface tension in capillary action?

  • $w = r^2hg$
  • $r^2hg$ (correct)
  • $r^2h\rho$
  • $r^2h$

    • In terms of capillary rise, what is the expression for surface tension?

  • $r^2h$
  • $rh - gT(2 \cos\theta)$
  • $r^2h\rho - 2T/R$
  • $rh - gT$ (correct)

    • How is the pressure affected at the concave side in capillarity?

    <p>The pressure is higher at the concave side.</p> Signup and view all the answers

    What does the volume of liquid in the capillary rise depend on?

    <p>The radius of the capillary tube</p> Signup and view all the answers

    What does the mass of liquid in the capillary rise depend on?

    <p>The radius and height of the capillary tube</p> Signup and view all the answers

    What happens when a capillary is dipped in a liquid that does not wet the surface?

    <p>The liquid level falls in the capillary</p> Signup and view all the answers

    In a capillary tube, where is Point B located?

    <p>Just below the convex surface inside the capillary</p> Signup and view all the answers

    What is observed when a capillary is dipped in water?

    <p>The water level in the capillary rises</p> Signup and view all the answers

    Which term describes the upward movement of liquids in narrow tubes due to intermolecular forces?

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

    In capillarity, what factor determines whether a liquid will rise or fall in a capillary tube?

    <p>Surface tension of the liquid</p> Signup and view all the answers

    Which of the following materials does NOT exhibit capillarity?

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

    What is the phenomenon called when the level of liquid in a capillary tube rises when the tube is dipped in a liquid that wets its surface?

    <p>Capillary action</p> Signup and view all the answers

    In capillarity, why does the level of liquid in a capillary tube drop when it is dipped in a liquid that does not wet its surface?

    <p>Increase in atmospheric pressure inside the capillary</p> Signup and view all the answers

    What is the term used to describe a tube with a very fine bore and open at both ends, used in capillary action?

    <p>Capillary tube</p> Signup and view all the answers

    Which of the following factors affects capillarity in a liquid?

    <p>Temperature of the liquid</p> Signup and view all the answers

    In capillarity, what happens to the level of a liquid in a capillary tube when the liquid completely wets the surface of the capillary?

    <p>The liquid level rises</p> Signup and view all the answers

    What is the term for the rise or fall of a liquid inside a capillary tube when it is dipped in the liquid?

    <p>Capillary action</p> Signup and view all the answers

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