Why does water rise in capillary tube?

Water rises inside the capillary tube due to adhesion between water molecules and the glass walls of the capillary tube. This adhesion, together with surface tension in the water, produces an effect called capillarity , with a characteristic concave surface. The narrower the tube, the higher the water will rise.

Why is mercury depressed in capillary tube?

When a capillary tube is immersed vertically in mercury, the level of mercury in the capillary is observed to be depressed. In case of mercury, the cohesive force the stronger than the adhesive forces. As a result mercury gets detached from the glass surface and its level therefore, goes down in the capacillary tube.

When water rises in a capillary tube of radius?

When water rises in a capillary tube of radius r to a height h, then its potential energy is U. If capillary tube of radius “2r’ is dipped in same water then potential energy of water is U2.

Does the capillary rise occurs in mercury as well?

No, the capilary rise does not occurs in mercury. Mercury surface tension property is the reason for capilary fall on mercury. Water makes an acute angle of contact with glass, so it rises. But in contact with glass mercury makes an obtuse angle, so it falls in a capillary tube.

When a capillary is dipped in water water rises to a height h’if the length of the capillary is made less than H then?

If the length of capillary tube above the surface of water is made less than h then. water does not rise at all. water rises up to the tip of capillary tube and then starts overflowing like a fountain. water rises up to the top of capillary tube and stays there without overflowing.

What is the relation between capillary rise and diameter of capillary tube?

Capillary rise is inversely proportional to the capillary diameter.

Why a capillary tube is put in a wider tube or a fusion tube?

The adhesive forces are proportional to the diameter of the tube while the gravitational effect due to the liquid’s weight is proportional to the square of the diameter. This results in the greater height of the meniscus for narrower tubes.

How does the height to which water is lifted in a capillary tube relate to adhesion and the weight of the water lifted?

How does the height to which water is lifted in a capillary tube relate to adhesion and the weight of the water lifted? Water rises to a height where the adhesive forces equal the weight of the water lifted.

When a capillary is dipped in a water?

When the capillary tube is dipped into the water, the water will rise to a height of$h$, now as the capillary is taken out of the water, and the hand is removed from the bottom there a meniscus will be formed due to surface tension.

When capillary is dipped into water then up to how much height water will rise?

If one end of capilary tubes is dipped into water then water rises up to 3cm.

When the radius of capillary tube increases the capillary rise?

This explains the rise in the liquid layer in the capillary tube. If ‘r’ is the radius of the bore of the capillary tube, the length along which the force of surface tension acts is 2πr. Hence total upward force is 2πr T cos θ. Due to this force the liquid rise up in the tube.

What is the relation between the radius of a capillary tube and the height of water column in it?

1) with radius r rises until the forces acting on the liquid in the tube are balanced at height l. The downward force is simply the gravitational force on the column of liquid: liquid mass times gravitational acceleration.