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Calculate the force required to separate...

Calculate the force required to separate the glass plates of area `10^(-2)m^(2)` with a film of water 0.05 mm thickness between them (surface tension of water `=70xx10^(-3)N//m)`)

A

28 n

B

14 n

C

50 n

D

38 N

Text Solution

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Knowledge Check

  • Calculate the force required to separate the galss plates of area 10^(-2)m^(2) with a film of water 0.05 mm thickness between them (surface tension of waer =70xx10^(-3)N//m) )

    A
    `28N`
    B
    `112N`
    C
    `5.6N`
    D
    `11.2N`

  • What is the force required to separate two glass plates of area 3 xx 10^(-2) m^(2) with a film of water of thickness 0.07 mm between them ? (Surface tension of water = 7 xx 10^(-2) N/m )

    A
    50 N
    B
    60 N
    C
    20 N
    D
    80 N

  • The minimum force required to separate a light glass plate of perimeter 5m from a water surface is (Given surface tension of water = 70 xx 10^(-3) N/m)

    A
    `350 xx 10^(-3)`N
    B
    `75 xx 10^(-3)`N
    C
    `100 xx 10^(-3)`N
    D
    `150 xx 10^(-3)` N

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