A steel needle may be made to float on water through the Steel is more dense than water. This is because the water surface acts as a stretched elastic membrane and supports the needle. This property of a liquid is called surface tension. Surface tension is the property by virtue of which the free surface […]
Pascal’s law state that, whenever external pressure is applied on any part of a fluid contained in a vessel at rest, it is transmitted undiminished and equally in all directions. This is the Pascal’s law for transmission of fluid pressure and has many applications in daily life. Applications Of Pascal’s Law (I) Hydraulic Lift Hydraulic
The gaseous envelope surrounding the earth is called Earth’s atmosphere. The pressure exerted by the atmosphere is called atmospheric pressure. The force exerted by air column of air on a unit area of the earth’s surface is equal to the atmospheric pressure. It is denoted by Pₐ. The value of atmospheric pressure on the surface
If you are preparing for CBSE Class 12 Hindi board examination in 2024, Then this post is for you that The Central Board of Secondary Education (CBSE) has officially released Competency Focused Practice Questions with details Answers. In this article I am delivering you the significance of these practice questions for Board Exams 2024 and
CBSE Class 12 Hindi Competency Based Questions 2024 PDF Download Read More »
We will take three vessels A, B and C of different shapes which are open both at the top and the bottom ends. These vessels are connected with a common pipe at the bottom. Now, we will fill the three vessels with the same liquid. The reading, we note that pressure will be same even
Let a Fluid at rest having density ρ contained in a cylindrical vessel. Let the two point a and b separated by a vertical distance h. Now, we consider an imaginary cylinder of fluid of cross sectional area A, such that point a and b lie on its upper and lower circular faces respectively. Then
The French scientist Blaise Pascal observed that pressure in a liquid at rest is the same at all point if they are at the same height. This is known as Pascal’s law. Proof Of Pascal’s Law It can be proved by using two principles as Now we consider an element in the interior of a
Density Density of a substance is defined as mass per unit volume of the substance. It is denoted by ρ. If M be the mass of the substance of volume V, then density of that substance is given by Relative Density Relative density of a substance is defined as the ratio of the density of
The pressure of liquid at a point is the thrust (or normal force) exerted by the liquid at rest per unit area around that point. If the total force F acts normally over a flat area A, then the pressure is If the force is not distributed uniformly over the given surface, the pressure will
A liquid in equilibrium has a fundamental properties that it exerts a force on any surface in contact with it and this force act perpendicular to the surface. The total force exerted by a liquid on any surface in contact with it is called thrust. It is because of this thrust that a liquid flows
