Question

What effect does capillary action have on the reading of a manometer with uniform diameter? Explain your answer.

Short answer

The meniscus of the manometer is said to be convex.

Step-by-step solution

Conceptual Introduction

Fluid statics, often known as hydrostatics, is a branch of fluid mechanics that investigates the state of balance of floating and submerged body, as well as the pressure in a fluid, or imposed by a fluid, on an immersed body.

Define the Capillarity effect

The ability of a fluid to be raised or suppressedin a thin tube, or capillary tube, is known as capillary action.

When a capillary tube is put vertically into a liquid, the liquid inside the tube rises or falls depending on the mix of components, as observed in capillary action.

The contact angle, as well as the relative strength of the cohesive and adhesive forces, define the actual impact. If theta is less than$90°\text{C}$, the fluid will be raised, and if theta is greater than $90°\text{C}$, the fluid will be repressed.

Capillary action may carry liquids over vast distances horizontally, but the height to which a liquid in a tube can be elevated or suppressed is limited by its weight.

$\mathit{h}\mathbf{=}\frac{\mathbf{2}\mathbf{\gamma }\mathbf{c}\mathbf{o}\mathbf{s}\mathbf{\theta }}{\mathbf{\rho }\mathbf{g}\mathbf{d}}$

The capillarity is calculatedby this formula.

Capillarity effect in space

The meniscus of a manometer with uniform diameter will be convex or concave due to the capillary action.The contact angle determines the capillary effect's strength.

Mercury is the liquid utilised in the manometer, and the contact angle is 130 degrees.

As a result, the meniscus of the manometer is convex.