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When two soap bubbles of radii r1 and r2...

When two soap bubbles of radii `r_1` and `r_2` (`r_2>r_1`)coalese, the radius of curvature of common surface is

A

`(r_2 - r_1)`

B

`(r_2 + r_1)`

C

`(r_2-r_1)/r_1r_2`

D

`(r_1r_2)/(r_1 - r_2)`

Text Solution

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The correct Answer is:
D
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