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The radii of two soap bubbles are $r_{1}$ and $r_{2}$. In isothermal condition they combine with each other to form a single bubble. The radius of resultant bubble is
The radii of two soap bubbles are $r_{1}$ and $r_{2}$. In isothermal condition they combine with each other to form a single bubble. The radius of resultant bubble is
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Logic Tip: When bubbles coalesce isothermally in a vacuum, the sum of their surface areas remains constant.
Updated On: Apr 28, 2026
- $R=\frac{r_{1}+r_{2{2}$
- $R=r_{1}(r_{1}r_{2}+r_{2})$
- $R=\sqrt{r_{1}^{2}+r_{2}^{2$
- $R=r_{1}+r_{2}$
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The Correct Option is C
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