Capillarity and Capillary Action

IMPORTANT

Capillarity and Capillary Action: Overview

This topic covers concepts, such as, Capillarity and Capillary Tube, Capillary Action, Calculation of Capillary Rise & Detergent Action in Removing Stain etc.

Important Questions on Capillarity and Capillary Action

MEDIUM
IMPORTANT

On dipping one end of a capillary in liquid and inclining the capillary at an angles 30o and 60​o with the vertical, the lengths of liquid columns in it are found to be l 1 and l 2 respectively. The ratio of l 1 and l 2 is

MEDIUM
IMPORTANT

On dipping one end of a capillary in liquid and inclining the capillary at an angles 300 and 600 with the vertical, the lengths of liquid columns in it are found to be l 1 and l 2 respectively. The ratio of l 1 and l 2 is

EASY
IMPORTANT

Water rises in a vertical capillary tube upto a height of 2.0 cm. If the tube is inclined at an angle of 60°with the vertical, then upto what length the water will rise in the tube

EASY
IMPORTANT

Water rises in a vertical capillary tube up to a height of 2.0 cm. If the tube is inclined at an angle of 60° with the vertical, then up to what length the water will rise in the tube?

MEDIUM
IMPORTANT

Two capillary tubes P and Q are dipped vertically in water. The height of water level in capillary tube P is 23rd of the height in capillary tube Q. The ratio of their diameter is

EASY
IMPORTANT

If the surface tension of water is 0.06 N m-1, then the capillary rise in a tube of a diameter 1 mm is (Take, angle of contact θ=0°, density of water, ρ=103 kg m-3g=9.8 m s-2)

MEDIUM
IMPORTANT

A capillary tube is immersed vertically in water and the height of the water column is x . When this arrangement is taken into a mine of depth d, the height of the water column is y . If R is the radius of the earth, the ratio x y  is:

EASY
IMPORTANT

The rise of liquid column in a capillary tube, if it is taken from Earth to the surface of the moon, will be: (acceleration due to gravity on the earth is 6 times that on the moon)

MEDIUM
IMPORTANT

When a glass capillary tube of the radius 0.015 cm is dipped in water, the water rises to a height of 15 cm within it. Assuming the contact angle between water and glass to be 0°, the surface tension of water is [ρwater =1000 kg m-3, g=9.81 m s-2]

EASY
IMPORTANT

Kerosene oil rises up in a wick of a lantern because of

EASY
IMPORTANT

Water rises to a height of 16.3 cm in a capillary of height 18 cm . If the tube is cut at a height of 12 cm , then-

MEDIUM
IMPORTANT

A capillary tube is immersed vertically in water and the height of the water column is x . When this arrangement is taken into a mine of depth d, the height of the water column is y . If R is the radius of earth, the ratio x y  is :

MEDIUM
IMPORTANT

Which of the following graphs may represent the relation between the capillary rise h and the radius r of the capillary?

Question Image  

MEDIUM
IMPORTANT

Water rises in a capillary tube to a height h. Choose false statement regarding capillary rise from the following.

MEDIUM
IMPORTANT

Water rises in a capillary tube to a height h. Choose false statement regarding capillary rise from the following.

MEDIUM
IMPORTANT

If the surface tension of water is 0.06 N/m, then the capillary rise in a tube of a diameter 1 mm is θ=0o

MEDIUM
IMPORTANT

Water rises in a capillary tube to a height of 1 cm. In another capillary where the radius is one-third of it, how high will the water rise (in cm )?

MEDIUM
IMPORTANT

Two large glass plates are dipped vertically in water of density ρ at small separation d. If surface tension of water is T, then rise of water between the plates is

EASY
IMPORTANT

A fluid has a density of 1040 kg m-3. If it rises to a height of 1.8 cm in a 1.0 mm diameter capillary tube, what is the surface tension of the liquid? Assume a contact angle of zero.

EASY
IMPORTANT

The height of a liquid in a fine capillary tube