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A spherical soap bubble of radius 1 cm i...

A spherical soap bubble of radius 1 cm is formed inside another of radius 3 cm the radius of single soap bubble which maintains the same pressure difference as inside the smaller and outside the larger soap bubble is ____cm

A

`0.75 cm`

B

`0.75 m`

C

`7.5 cm`

D

`7.5 m`

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • A soap buble of radius 1.0 cm is formed inside another soap bubble of radius 2.0 cm . The radius of an another soap bubble which has the same pressure difference as that between the inside of the smaller and outside of large soap bubble , in metres is

    A
    `6.67xx10^(-3)`
    B
    `3.34xx10^(-3)`
    C
    `2.23xx10^(-3)`
    D
    `4.5xx10^(-3)`

  • The difference of pressures between inside and outside of a soap bubble is

    A
    `2T//r`
    B
    `4T//r`
    C
    `2r//T`
    D
    `4r//T`

  • A soap bubble of radius r is placed on another bubble of radius 2r . The radius of the surface common to both the bubbles is

    A
    `(2r)/(3)`
    B
    `3r`
    C
    `2r`
    D
    `r`

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