A soap bubble of radius r 1 is placed on another soap bubble of radius r 2 (r 1 < r 2 ). The radius R of the soapy film separating the two bubbles is:
A
r 1 + r 2
B
C
(r 1 3 + r 2 3 )
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Equating pressures on the shaded portion:
– 
= 
Get R = 
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
The temperature at which the surface tension of water is zero
Water rises to a height h in a capillary tube lowered vertically into water to a depth λ as shown i…
At critical temperature, the surface tension of a liquid:
The excess pressure inside a soap bubble is equal to 2 mm of kerosene (density 0.8 g cm –3 ). If th…