JEE Mains · Physics · STD 11 - 9.2 surface tension
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 ______ .
- A 10
- B 8
- C 4
- D 6
Answer & Solution
Correct Answer
(C) 4
Step-by-step Solution
Detailed explanation
\(R=\frac{R_2 R_1}{R_2-R_1}=\frac{4 \times 2}{2}=4 \mathrm{~cm}\)
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