Home
Class 12
PHYSICS
What is capillarity? Derive an expressio...

What is capillarity? Derive an expression for the height to which the liquid rise in capillary tube of `r` with angle of contact ` theta`. Give two examples of capillarity from daily life.

Text Solution

AI Generated Solution

### Solution **Step 1: Definition of Capillarity** Capillarity is the phenomenon of the rise or fall of a liquid in a narrow tube (capillary tube) due to the interplay of cohesive and adhesive forces. When a capillary tube is placed in a liquid, the liquid either rises or falls in the tube depending on the nature of the liquid and the tube material. **Step 2: Understanding the Setup** Consider a capillary tube of radius \( r \) immersed vertically in a liquid. The liquid forms a meniscus at the surface, which is concave if the liquid wets the tube (like water in glass). The angle of contact is denoted as \( \theta \). ...
Promotional Banner

Topper's Solved these Questions

  • LIQUIDS

    VMC MODULES ENGLISH|Exercise LEVEL -1|90 Videos

  • LIQUIDS

    VMC MODULES ENGLISH|Exercise LEVEL -2|50 Videos

  • LIQUIDS

    VMC MODULES ENGLISH|Exercise LEVEL-0 ( Short Answer Type - I )|7 Videos

  • LAWS OF MOTION

    VMC MODULES ENGLISH|Exercise IMPECCABLE|53 Videos

  • MAGNETIC EFFECTS OF CURRENT

    VMC MODULES ENGLISH|Exercise JEE Advanced (Archive)|78 Videos

Similar Questions

Explore conceptually related problems

A liquid rises in a capillary tube when the angle of contact is:

The liquid in the capillary tube will rise if the angle of contact is

Due to capillary action, a liquid will rise in a tube, if the angle of contact is

Assertion : The water rises higher in a capillary tube of small diameter than in the capillary tube of large diameter. Reason : Height through which liquid rise in capillary tube inversely proportional to the diameter of capillary tube.

Write the factors on which pressure acting on a surface depends. Write two examples from daily life.

Statement I: Finer the capillary, greater is the height to which the liquid rises in the tube Statement II: This is in accordance with the ascent formula.

What do you mean by capillarity. Derive relation for the rise of liquid in a capillary tube on the basis of balancing force and explain the rise of liquid in a tube of insufficient length.

A capillary tube with inner cross-section in the form of a square of side a is dipped vertically in a liquid of density rho and surface tension rho which wet the surface of capillary tube with angle of contact theta . The approximate height to which liquid will be raised in the tube is : (Neglect the effect of surface tension at the corners of capillary tube)

A glass tube of radius 0.4mm is dipped vertically in water. Find upto what height the water will rise in the capillary? If the tube in inclined at an angle of 60^(@) with the vertical, how much length of the capillary is occupied by water? Suface of water =7.0xx10^(-2)N//m ,density of water =10^(3)kg//m^(3) .

A glass tube of radius 0.4mm is dipped vertically in water. Find upto what height the water will rise in the capollary? If the tube in inclined at an angle of 60^(@) with the vertical, how much length of the capillary is occupied by water? Suface of water =7.0xx10^(-2)N//m ,density of water =10^(3)kg//m^(3) .