Capillary Action - Practice Questions & MCQ

20 cm long capillary tube is dipped in water. The water rises up to 8 cm. If the entire arrangement is put in a freely falling elevator, the length (in cm) of the water column in the capillary tube will be :

A capillary tube made of glass with a radius of 0.15 mm is dipped vertically in a beaker filled with methylene iodide (surface tension = 0.05 Nm¹, density = 667 kg m³), which rises to height h in the tube. It is observed that the two tangents drawn from liquid-glass interfaces (from opposite sides of the capillary) make an angle of 60° with one another. Then h is close to (g=10 ms²):

A capillary tube $(A)$ is dipped in water. Another identical tube $(B)$ is dipped in a soapwater solution. Which of the following shows the relative nature of the liquid columns in the two tubes?

In the following fig. is shown the flow of liquid through a horizontal pipe. Three tubes A, B and C are connected to the pipe. The radii of the tubes A, B and C at the junction are respectively 2 cm, 1 cm and 2 cm. It can be said that the

Water rises in a capillary tube to a certain height such that the upward force due to surface tension is balanced by 75 × 10^-4 N, forces due to the weight of the liquid. If the surface tension of water is 6 × 10^-2 N/m, the inner circumference of the capillary must be

A capillary tube of radius r can support a liquid of weight 6.28 × 10^-4 N. If the surface tension of the liquid is 5 × 10^-2 N/m. the radius of the capillary must be

Given below are two statements :
Statement-I: When a capillary tube is dipped into a liquid, the liquid neither rises nor falls in the capillary. The contact angle may be $0^{\circ}$.
Statement-II: The contact angle between a solid and a liquid is a property of the material of the solid and liquid as well :
In the light of above statement, choose the correct answer from the options given below.
 

If the angle of contact $\theta$ is less than $90^{\circ}\left(\Theta<90^{\circ}\right)$ between the liquid surface and sorbet surface in capillary then the meniscus of the liquid surface will be -