Home
Class 12
PHYSICS
A film of water is formed between two st...

A film of water is formed between two straight parallel wires each `10 cm` long and at a seperation of `0.5 cm`. Calculate the work required to increase `1mm` distance between the wires. Surface tension of water `=72xx10^(-3)N//m`.

A

`12 xx 10^(-7)J`

B

`144 xx 10^(-5) J`

C

`12 xx 10^(-4) m^(2)`

D

`144 xx 10^(-7) J`

Text Solution

Verified by Experts

Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • SURFACE TENSION & VISCOSITY

    MOTION|Exercise Exercise - 3 | Level-I Subjective | JEE Advanced|9 Videos

  • SURFACE TENSION & VISCOSITY

    MOTION|Exercise Exercise - 3 | Level-II Subjective | JEE Advanced|4 Videos

  • SURFACE TENSION & VISCOSITY

    MOTION|Exercise Exercise - 2 (Level-I) Objective Problems | JEE Main|11 Videos

  • SURFACE TENSION

    MOTION|Exercise Exercise - 3 | Section - B Previous Year Problems | AIEEE|12 Videos

  • Thermodynamics

    MOTION|Exercise EXERCISE - 3 SECTION b|26 Videos

Similar Questions

Explore conceptually related problems

A film of water is formed between two straight paralel wires each 10 cm long and at seperation 0.5 cm . Calculate the work requied to increase 1mm distance between the wires. Surface tension of water =72xx10^(-3)N//m .

A film of water is formed between two straight parallel wires each 10 cm long and at a separatin 0.5 cm . Calculate the work required to increase 1 mm distance between wires. Surface tension = 72 xx 10^(-3) N//m .

Knowledge Check

  • A film of water is formed between two straight parallel wires of length 10 cm with separation of 0.5 cm . The work done to increase the separation by 0.1 cm is (S.T=0.070 N/m)

    A
    `14xx10^(-6)` J
    B
    `16xx10^(-6)`J
    C
    `18xx10^(-6)` J
    D
    `12xx10^(-6)` J

  • A water film is formed between two parallel wires of 10 cm length. The distance of 0.5 cm between the wires is increased by 1mm. What will be the work done ? (Given, surface tension of water of 72 Nm^(-1) )

    A
    288 erg
    B
    144 erg
    C
    72 erg
    D
    36 erg

  • A water film is formed between two stratght parallel wires of length 20 cm each with a separation of 0.1 cm . If the distance between the wires is increased by 0.1 cm , how much work is done ? (T=0.072 N/m)

    A
    `0.144xx10^(-5)`J
    B
    `14.4xx10^(-5)` J
    C
    `1.44xx10^(-5)` J
    D
    `144xx10^(-5)` J

    • Similar Questions

    Explore conceptually related problems

    The length of a needle floating on water is 2.5 cm. Calculate the added force required to pull the needle out of water [T=7.2xx10^(-2)N//m]

    The length of needle floating on water is 2.5 cm. Calculate thhe added force required to pull the needle out of water (T=7.2xx10^(-2)N//m)

    A capillary tube of radius 0.5 mm is dipped in a vessel containing water. Calculate the height to which water will rise in the capillary tube. Take, surface tension of water =7.4 xx 10^(-3)" N/m".

    A film of water is formed between two straight parallel wires of length 10 cm each separated by 0.5cm If their separation is increased by 1mm while still maintaining their parallelism, how much work will have to be done (Surface tension of water =7.2xx10^-2(N)/(m) )

    A film of water is formed between two straight parallel wires , each of length 10 cm and separated by 4 mm . How much work should be done to increase their separation by 1 mm , while still maintaining their parallelism ? [ T = 7.5 xx 10^(-2)N//m]

    Home
    Profile