Shape of menuscus of a liquid of zero an...

Shape of menuscus of a liquid of zero angle of contact is

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Define angle of contact .

A cube with mass m completely wettable by water floats on the surface of water each side of the cube is a what is the distance h between the lower face of cube and the surface of the water if surafce tension is S. Take densities of water as rho_(w) take angle of contact is zero.

If a liquid does wet the surface ,its angle of contact is acute or obtuse ?

The cohesive force between the molecules of liquid is more than the cohesive force between the molecules of plate then angle of contact obtain is …..(acute /obtuse) and free surface has shape ….. (concave/convex)

The cohesive force between the molecules of liquid is less than the cohesive force between the molecules of plate then angle of contact obtain is …. (acute /obtuse) and free surface has shape ….(concave/convex)

Liquid rises to a height of 2 cm in a capillary tube and the angle of contact between the solid and the liquid is zero. If the tube is depressed more now so that top of capillary is only 1 cm above the liquid, then the apparent angle of contact between the solid and the liquid is

On what factors does the value of angle of contact depend ?

Statement-1: The angle of contact of a liquid decrease with increase in temeperature Statement-2: With increase in temperature the surface tension of liquid increase.

Assertion : At critical temperature, surface tension of liquids becomes zero. Reason : At critical temperature, intermolecular forces for liquids and gases become equal. Liquids can expand without restriction.

ALLEN -ELASTICITY, SURFACE TENSION AND FLUID MECHANICS-Exercise 1 (Surface Tension)

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