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What should be the gauge pressure inside an air bubble of 0.2 mm radius situated below the surface of the water ? Surface Tension of water is 0.07 N/m
What should be the gauge pressure inside an air bubble of 0.2 mm radius situated below the surface of the water ? Surface Tension of water is 0.07 N/m

```
3 years ago

Arun
25768 Points
```							Pi-P​o = 2T / r Where Pi= ​The pressure inside the bubble Po= The pressure outside the bubble = Here when er talk about the surface the pressure can be considered to be zero T = surface tension , r = radius of the bubble= 0.2 mm = 0.2/1000 m  on substituing the values  = P = 2 x 0.07 x1000 / 0.2 = 700 N /m²= 700 Pa
```
3 years ago
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### Course Features

• 110 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions