Home
Class 11
PHYSICS
If the force required to pull out a glas...

If the force required to pull out a glass plate of length 9.8 cm and thickness 2 mm from a liquid is 0.6 gmwt. The surface tension of water is `Nm^(-1)`

A

`2.94xx10^(-3)`

B

`29.4xx10^(3)`

C

`29.4xx10^(-2)`

D

`29.4xx10^(-3)`

Text Solution

Verified by Experts

The correct Answer is:
D
`T=(F)/(2(l+t))`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • MECHANICAL PROPERTIES OF FLUIDS

    NARAYNA|Exercise EXERCISE - II (H.W) (WORK & SURFACE ENERGY)|1 Videos

  • MECHANICAL PROPERTIES OF FLUIDS

    NARAYNA|Exercise EXERCISE - II (H.W) (CAPILLARITY AND CAPILLARY RISE)|4 Videos

  • MECHANICAL PROPERTIES OF FLUIDS

    NARAYNA|Exercise EXERCISE - II (H.W) (POISEUILLE.S EQUATION)|6 Videos

  • MATHEMATICAL REVIEW & PHYSICAL WORLD

    NARAYNA|Exercise C.U.Q|13 Videos

  • MECHANICAL PROPERTIES OF SOLIDS

    NARAYNA|Exercise LEVEL-II (H.W)|24 Videos

Similar Questions

Explore conceptually related problems

Calculate the amount force required to take away a flat plate of radius 5 cm from the surface of water . Given surface tension of water = 72 "dyne"" "cm^(-1).

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) )

Knowledge Check

  • The force required to take away a flat circular plate of radius 2 cm from the surface of water, will be (the surface tension of water is 70 dyne/cm)

    A
    `280 pi` dyne
    B
    `250 pi ` dyne
    C
    `140 pi` dyne
    D
    `210 pi ` dyne

  • 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

  • The force required to lift a circular flat plate of radius 5 cm on the surface of water is: (Surface tension of water is 75 dyne/cm):-

    A
    30 dyne
    B
    60 dyne
    C
    750 dyne
    D
    750 `pi` dyne

    • Similar Questions

    Explore conceptually related problems

    The maximum force in addition to the weight required to pull a wire frame 5.0 cm long from a water surface at a temperature of 20^@ C is 720dyne . The surface tension of water is

    A thin wire ring of 1m. Is situated on the surface of a liquid. If the excess force required to lift it upwards (before the liquid film breaks) from the liquid surface is 8N, then the surface tension of liquid is :-(in N/m)

    The maximum force, in addition to the weight required to pull a wire of 5.0cm long from the surface of water at temperature 20^@C , is 728 dynes. The surface tension of water is

    The force required to take away flat plate of radius 4cm from the surface of water is (surface tension os water =70"dyne"//cm)

    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 )

    Home
    Profile