Question

Give the expression for excess pressure in an air bubble inside the liquid.​

Answer 1

Excess Pressure in an Air Bubble in Liquid:

If R is the radius of the air bubble, then the forces due to external and internal pressures are p₁ (πR²) and p₂ (πR²), respectively. Since the surface tension acts around the circumference of the bubble, therefore the force of surface tension is σ (2πR). p₂ – p₁ = 2T/ R.

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Answer 2

Give the expression for excess pressure in an air bubble inside the liquid.​

Answer:

Excess of pressure in an air bubble inside the liquid is ,P=2SR

where S= Surface Tension, R=Radius of air bubble of liquid.

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