Why the excess pressure in a soap bubble is more than that of in a water drop?

Explanation

To understand why the excess pressure in a soap bubble is greater than that in a water drop, we can break down the explanation into several steps:

### Step 1: Understanding Excess Pressure
Excess pressure is defined as the pressure difference between the inside of a liquid droplet (or bubble) and the surrounding atmosphere. It is influenced by the surface tension of the liquid and the curvature of the surface.

### Step 2: Surface Tension and Curvature
Surface tension is the force that causes the surface of a liquid to behave like a stretched elastic membrane. The curvature of the surface affects the pressure inside the droplet or bubble. For a spherical shape, the excess pressure (ΔP) can be calculated using the formula:
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