Question
What do you understand by the pressure and thus on a surface immersed in a liquid? Things can be cut by the sharp edge of a knife easily but cannot be cut blunt edge Explain.
Answer
Pressure on a surface immersed in a liquid is the force exerted by the liquid per unit area of the surface. It is directly proportional to the depth of the surface below the liquid surface and the density of the liquid.
A sharp edge of a knife can cut things easily because it concentrates the force on a small area, increasing the pressure applied to the object. In contrast, a blunt edge distributes the force over a larger area, decreasing the pressure applied to the object, which makes it harder to cut.
