Two soap bubbles of radius 2 cm and 4 cm , respectively, are in contact with each other. The radius of…

Two soap bubbles of radius 2 cm and 4 cm , respectively, are in contact with each other. The radius of curvature of the common surface, in cm , is ______.

Solution

$R=\frac{R_2 R_1}{R_2-R_1}=\frac{4 \times 2}{2}=4 \mathrm{~cm}$

Asked in: JEE Main 2025 (22 Jan Shift 1)

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