defence exam Agniveer Vayu Group X & XY Mock Test 01/2026 Physics

Find the radius of curvature of common surface of two bubbles (R1>R2).

1
\( R = \frac{R_1 R_2}{R_1 + R_2} \)
2
\( R = \frac{2R_1 R_2}{R_1 - R_2} \)
3
\( R = \frac{R_1 R_2}{R_1 - R_2} \)
4
\( R = \frac{2R_1 R_2}{(R_1 + R_2)} \)

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