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A soap bubble of radius r is formed insi...

A soap bubble of radius `r` is formed inside another soap bubble of radius `R (gt r)`. The atmospheric pressure is `P_(0)` and surface tension of the soap solution is T. Calculate change in radius of the smaller bubble if the outer bubble bursts. Assume that the excess pressure inside a bubble is small compared to `P_(0)`.

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The correct Answer is:
`Deltar=(4Tr)/(3P_(0)R)`
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