A soap bubble A of radius 0. 03 m and another bubble B of radius 0. 04 m coalesce to form a combined bubble such that the radius of curvature of their common interface is r. Then, the value of r is
Text Solution
Verified by ExpertsThe correct answer is:
C
Let the radius of curvature of the common internal film surface of the double Bubble formed by
two bubbles A and B be r.
Excess of pressure as compared to the atmosphere inside A is
Excess of pressure inside B is
In the double bubble, the pressure difference between A and B on either side of the common surface is
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