Question

The excess pressure inside an air bubble released in mercury is_____

Answer 1

Answer:

2T%r

Explanation:

Due to surface tension change in pressure will be 2T%r

Answer 2

Excess pressure = $\frac{2S}{r}$

Explanation:

Pressure usually refers to the force acting on any surface per unit area. It is commonly measured in terms of Pascal or mm of mercury. The air bubbles that are present inside the mercury also exerts a certain amount of pressure.

The excessive air pressure inside any air bubble within a liquid (such as mercury) is twice the surface tension of the given liquid over the air bubble radius.

Mathematically, Excess pressure = $\frac{2S}{r}$, where

S = Surface tension of the mercury

r = Radius of the air bubble

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