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Calculate excess pressure in an air bubb...

Calculate excess pressure in an air bubble of radius 6 mm. Surface tension of liquid is 0.58 N/m.

Text Solution

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Excess pressure in soap bubble = p =`(4T)/( r) = ((4xx0.58)/(6xx10^(-3)))`
387 `Nm^(-2)`
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Knowledge Check

  • Excess pressure inside a soap bubble of radius r and surface tension T is

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

  • The excess pressure inside a soap bubble of radius R is (S is the surface tension)

    A
    `2S/R`
    B
    `4S/R`
    C
    `S/R`
    D
    `S/2R`

  • The excess pressure inside an air bubble of radius 1 mm formed inside water is (S.T=0.072N//)

    A
    14.`4N//m^2`
    B
    `28.8 N//m^2`
    C
    `144N//m^2`
    D
    `288N//m^2`

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    What is the excess of pressure inside a soap bubble of radius 3cm if the surface tension of the soap solution is 30 dyn/cm ?

    The excess pressure in a soap bubble of diameter 8 cm and surface tension 0.02 N/m, is

    What is the excess pressure inside a drop of mercury of radius 3.0 mm? (Surface tension of mercury is 4.65 xx 10^(-1) N m^(-1) )

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