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Two soap bubbles of radii r1 and r2 com...

Two soap bubbles of radii `r_1 and r_2` combine to form a bigger bubble under isothermal conditions. The radius of bigger bubble will be

A

`(r_1r_2)/( r_2 - r_1)`

B

`sqrt(r_1 r_2)`

C

`r_1 +r_2`

D

`sqrt(r_(1)^(2) +r_(2)^(2))`

Text Solution

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The correct Answer is:
D
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Knowledge Check

  • Two spherical soap bubbles of radii r_(1) and r_(2) in vacuum combine under isothermal conditions. The resulting bubbles has a radius equal to

    A
    `(r_(1)+r_(2))/2`
    B
    `(r_(1)r_(2))/(r_(1) + r_(2))`
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