If the lower end of a capillary tube of radius 2.5 mm is dipped 8 cm below the surface of water in a beaker, then calculate the pressure within a bubble blown at its end in water, in excess of atompheric pressure. [Surface tension of water `72 xx 10^(-3)` N/m]

Explanation

To solve the problem, we will follow these steps:

### Step 1: Understand the Given Data
- Radius of the capillary tube (r) = 2.5 mm = 2.5 × 10^(-3) m
- Depth of the capillary tube below the water surface (h) = 8 cm = 0.08 m
- Surface tension of water (T) = 72 × 10^(-3) N/m
- Density of water (ρ) = 1000 kg/m³ (approximately)
- Acceleration due to gravity (g) = 10 m/s² (approximately)
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