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Two spherical soap bubbles of radii r1 a...

Two spherical soap bubbles of radii `r_1` and `r_2` in vacuume coalesce under isothermal condition. The resulting bubble has radius `R` such that

A

`(r_1+r_2)/2`

B

`(r_1r_2)/(r_1+r_2)`

C

`sqrt(r_1r_2)`

D

`sqrt(r_1^2+r_2^2)`

Text Solution

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The correct Answer is:
D
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