Mercury Capillary Tube and Pressure Variation Quiz
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Questions and Answers

What is the relationship between the pressure due to the liquid column in a capillary and the pressure difference due to concavity?

  • They are unrelated
  • They are directly proportional
  • They are inversely proportional
  • They are equal (correct)
  • How is the mass of the liquid in capillary rise calculated?

  • $V = r^2h$
  • $V = r^2h$
  • $w = r^2hg$
  • $m = r^2h$ (correct)
  • In capillarity, where is point D located?

  • Just below the plane surface and outside the capillary, below point C (correct)
  • Just below the convex surface inside the capillary
  • At the same level as point B inside the capillary
  • Just above the plane surface outside the capillary
  • What is the factor that must be equal to the vertical component of the force due to surface tension in capillarity?

    <p>$r^2hg$</p> Signup and view all the answers

    What does the density of the liquid $ ho$ represent in the capillary rise expression?

    <p>None of the above</p> Signup and view all the answers

    How is the weight of the liquid in capillary (rise or fall) calculated?

    <p>$r^2hg$</p> Signup and view all the answers

    What is the phenomenon called when a liquid rises up the crevices in rocks?

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

    Why does the mercury level drop inside a capillary tube when it is dipped in a liquid that does not wet its surface?

    <p>To maintain the same pressure level</p> Signup and view all the answers

    What can be observed when a capillary tube is dipped in a liquid that does not wet its surface, like mercury in glass?

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

    Why does oil rise up the wick of a lamp?

    <p>As a result of adhesion and cohesion forces</p> Signup and view all the answers

    In capillarity, what is the shape of the mercury meniscus in a capillary tube if the liquid does not wet its surface?

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

    Which phenomenon explains why sap and water can rise up to the topmost leaves in a tree?

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

    In the given equation 2cosθ = 0.5732, what is the value of θ?

    <p>1800 degrees</p> Signup and view all the answers

    What is the force due to surface tension in a capillary with circumference 2πr?

    <p>T × 2πr</p> Signup and view all the answers

    What is the vertical component of the surface tension force in a capillary?

    <p>T × 2r cos(π)</p> Signup and view all the answers

    What property remains constant in a fluid at a given point during steady flow?

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

    In which publication did Einstein's first scientific article on capillarity appear?

    <p>Folegerungen aus den capillaritatserscheinungen</p> Signup and view all the answers

    Which branch of Physics focuses on the study of properties of fluids in motion?

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

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