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A soap bubble of radius r is placed on another bubble of radius 2r. The radius of the surface common to both the bubbles is ? please explain.

```
4 years ago

Vikas TU
14146 Points
```							Total Pressure exerted when small bubble lies on another big bubble = > let r’ be its radii then,4T/r’ = 4T/r – 4T/2rsolving r and r’ we get,r’ = 2r hence.
```
4 years ago
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