Surface Tension
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What Do You Mean By “Surface Tension” Of A Liquid?
Surface Tension: On account of the cohesive forces between the molecules of a liquid the free surface of a liquid always behaves like stretched membrane or sheet and tends to…
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What Is Surface Energy? Derive The Relation Between The Surface Tension And Surface Energy.
Surface Energy: Due to the surface tension of the liquid, the surface of the liquid tends to decrease the surface area. Hence when the area of a liquid surface is…
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Discuss The Effect Of Temperature On Surface Tension.
Effect of temperature: The surface tension of all liquids decreases linearly with rising temperature, over small temperature ranges, so that surface tension at C is given by, where, is the…
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Discuss The Effect Of Presence Of Dissolved Substance In The Liquid and Contamination Of Liquid Surface.
Presence of dissolved substances in the liquid: The presence of any foreign substances in the form of solutes in a liquid, changes or affects the surface tension of that liquid…
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Discuss The Condition Of equilibrium Of A Soap Bubble And Determine The Expression Of “Excess Pressure” Inside It.
Let us consider a soap bubble is produced from a straw as shown in the adjoining Fig.1, as it moves far the size of the soap bubble increases and ultimately…
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Derive An Expression For The Excess Pressure Inside A Curved Liquid Membrane. Hence Find The Condition Of Equilibrium Of A Soap Bubble.
Excess Pressure Inside A Curved Membrane: Let us consider, there is a curved liquid surface. This surface is at rest. There are two pressures acting on it. One is inward…
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Define Angle Of Contact.
Angle of contact: Let us consider, a glass plate is dipped vertically inside a liquid and the liquid wets the plate, as in case of water, alcohol, etc. The level…
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Upon What Factors Does The Angle Of Contact Depend?
The angle of contact between a liquid and a solid surface depends upon the nature of the solid and the liquid, the medium above the free surface of the liquid.…