Duduli

It is defined as the angle between the tangent to the liquid surface at the point of contact and solid surface inside the liquid is called as angle of contact  The value of angle of contact depends upon  (i) Nature of solid and liquid in contact  (ii) Cleanliness of the surface in contact  (iii) Medium above the free surface of liquid 

It states that the velocity of efflux of liquid from an orifice at a certain depth in a tank is equal to the velocity of a body acquired in falling freely from the free surface of the liquid upto the orifice.

It states that “ If an ideal liquid (i.e incompressible and non-viscous) flows through a tube in streamline motion, then the product of cross-sectional area of tube and velocity of flow is same at every point in the tube”.      Mathematically,                   AV=Constant Where , A = area of the cross section               V = velocity of the liquid

Answer:- This phenomenon, by virtue of which the level of liquid in a capillary tube is different from that outside it, is called capillarity.

Answer:- Surface film of a liquid is defined as the portion of liquid lying on the surface and caught between two parallel planes situated molecular range apart.

Answer:- It states that the total energy of a small amount of an incompressible,non-viscous liquid flowing without friction from one point to another, in a streamlined flow, remains constant throughout the displacement.

Answer:- Critical velocity is the maximum velocity of the flow of liquid flowing in a streamlined flow.

Answer:- Potential energy per unit area of the surface of fluid is called surface energy.

Answer:- According to Archimede's principle “Whenever a body is immersed in a liquid, it experiences an upward force known as buoyant force and hence loses weight equal to the weight of the liquid displaced".

Answer:- A liquid-flow in which the different layers or laminae glide over one another at a slow and steady velocity (below its critical velocity), without intermixing, is called a laminar, streamline or Viscous flow.

Answer:- The Pascal's law states that the pressure exerted at any part of a confined liquid is transmitted equally and undiminished in all directions throughout the liquid.

Principle:- ‘‘Whenever a body is immersed, wholly or partly, in a fluid at rest it experiences an upward thrust called buoyant force & loses his weight equal to the weight of fluid displaced by its immersed part.’’