Home
Class 12
PHYSICS
If the surface tension of a liquid is 5 ...

If the surface tension of a liquid is 5 N/m then the surface energy of the liquid film on a ring of area 0.15 `m^(2)` is

A

`1.5`J

B

`3.0`J

C

`2.25`J

D

`0.75`J

Text Solution

Verified by Experts

The correct Answer is:
A
`S.T .(T) = (dW)/(DA) = (dE)/(dA) `
` :. dE = T xx dA`
As there are two free surfaces for the film , dA = 2 (area of the film )
` :. dE = 2TdA = 2xx 5 xx 0.15 =1.5` J
Promotional Banner

Topper's Solved these Questions

  • SURFACE TENSION

    MARVEL PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS . (STANDARD LEVEL)|55 Videos

  • SURFACE TENSION

    MARVEL PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS . (HIGHER LEVEL)|35 Videos

  • STATIONARY WAVES

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP-8|20 Videos

  • WAVE MOTION

    MARVEL PUBLICATION|Exercise Test your grasp|15 Videos

Similar Questions

Explore conceptually related problems

Define surface energy of liquid -

The surface tension of a liquid is affected by

Surface tension in a liquid is due to :

Origin of surface tension of a liquid is due to

Surface tension of a liquid depends upon .

The surface tension of a liquid is 0.5 N/m . If a liquid film is formed on a ring of area 0.02 m^(2) then its surface energy will be

If the surface tension of a liquid is T , the gain in surface energy for an increase in liquid surface by A is

Surface tension of a liquid is numerically equal to

Surface tension of a liquid is found to be influenced by

The surface tension of a liquid is 5 Newton per metre. If a film is held on a ring of area 0.02 metres^(2) , its surface energy is about :