18 Questions
What is the expression for capillary rise or fall?
$rh - gT(2 \cos\theta)$
What is the factor that must be equal and opposite to the vertical component of the force due to surface tension in capillary action?
$r^2hg$
In terms of capillary rise, what is the expression for surface tension?
$rh - gT$
How is the pressure affected at the concave side in capillarity?
The pressure is higher at the concave side.
What does the volume of liquid in the capillary rise depend on?
The radius of the capillary tube
What does the mass of liquid in the capillary rise depend on?
The radius and height of the capillary tube
What happens when a capillary is dipped in a liquid that does not wet the surface?
The liquid level falls in the capillary
In a capillary tube, where is Point B located?
Just below the convex surface inside the capillary
What is observed when a capillary is dipped in water?
The water level in the capillary rises
Which term describes the upward movement of liquids in narrow tubes due to intermolecular forces?
Capillarity
In capillarity, what factor determines whether a liquid will rise or fall in a capillary tube?
Surface tension of the liquid
Which of the following materials does NOT exhibit capillarity?
Mercury
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?
Capillary action
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?
Increase in atmospheric pressure inside the capillary
What is the term used to describe a tube with a very fine bore and open at both ends, used in capillary action?
Capillary tube
Which of the following factors affects capillarity in a liquid?
Temperature of the liquid
In capillarity, what happens to the level of a liquid in a capillary tube when the liquid completely wets the surface of the capillary?
The liquid level rises
What is the term for the rise or fall of a liquid inside a capillary tube when it is dipped in the liquid?
Capillary action
Explore the capillarity phenomenon through examples like oil rising in a lamp wick, water absorption in cloth, and more. Learn about the capillary fall effect in liquids like water and mercury, with a qualitative explanation provided.
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