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A small air bubble of 0.1 mm diameter is...

A small air bubble of 0.1 mm diameter is formed just below the surface of water. If surface tension tension of water is 0.072 `Nm^(-1)`, the pressure inside the air bubble in kilo pascal is (Atmospheric pressure `=1.01xx10^(5)Pa`)

A

28.9

B

0.289

C

0.0289

D

103.88

Text Solution

Verified by Experts

The correct Answer is:
D
`P_("in")=P_(0)+(2T)/(R )`
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Knowledge Check

  • If a small air bubble of radius 0.1 mm is formed just below the surface of water, then the pressure inside the air bubble will be

    A
    `14 xx 10^(4) N//m^(2)`
    B
    `1.014 xx 10^(5)N//m^(2)`
    C
    ` 1.014 xx 10^(6) N//m^(2)`
    D
    `1.14 xx 10^(-5)N//m^(2)`

  • What should be the pressure inside a small air bubble of 0.2mm diameter situated just below the surface of water. ("Surface tension of water" = 0.072N//m)

    A
    `1.44xx10^(2)Pa`
    B
    `1.44xx10^(3)Pa`
    C
    `1.44xx10^(4)Pa`
    D
    `1.44xx10^(5)Pa`

  • Surface tension of water is 0.072 N m^(-1) . The excess pressure inside a water drop of diameter 1.2 mm is

    A
    `240 Nm^(-2)`
    B
    `120 Nm^(-2)`
    C
    `60 Nm^(-2)`
    D
    `72 Nm^(-2)`