Difference between Concave, Convex and Plane Meniscus
The differences between concave, conves and plane meniscus is added in the table below,
Concave Meniscus |
Convex Meniscus |
Plane Meniscus |
---|---|---|
In concave meniscus the pressure below the meniscus (P0 – 2T/r) is less than pressure above the meniscus (Po) |
In conves meniscus the pressure below the meniscus (P0 + 2T/r) is greater than pressure above the meniscus (Po) |
In plane meniscus the pressure below the meniscus is equal to pressure above the meniscus. |
Excess Pressure is given as, P = Pabove – Pbelow P = 2T/r |
Excess Pressure is given as, P = Pbelow – Pabove P = 2T/r |
Excess Pressure is given as, P = 0 |
Liquid will wet the solid of contact |
Liquid will not wet the solid of contact |
Critical case |
Angle of contact is acute angle, i.e. (θ < 90°) |
Angle of contact is obtuse angle, i.e. (θ > 90°) |
Angle of contact is right angle, i.e. (θ = 90°) |
Liquid level in the capillary ascends |
Liquid level in the capillary descends |
No capillarity |
Capillary Action
Capillary Action in Physics is the action of the liquid in the capillary tubes. Capillary tubes, which are narrow cylindrical tubes, have very small diameters. It is observed that the liquid in the capillary either rises (or) decreases in relation to the level of the surrounding liquid when these tiny tubes are submerged in a liquid. The action of these liquids is called the capillary action and it is an important phenomenon in physics.
Capillary action is caused by the intermolecular attraction of the water molecules and the adhesive force between the capillary walls and the liquid. In this article, we will learn about Capillary Action, the Capillary Action Formula, Its derivation, examples, and others in detail.
Table of Content
- What Is Capillary Action?
- Capillary Action Formula
- Forces in Capillary Action
- Liquid Meniscus in Capillarity
- Difference between Concave, Convex and Plane Meniscus
- Applications of Capillarity
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