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The surface energy of liquid film on a r...

The surface energy of liquid film on a ring of area `0.15 m^(2)` is (surface tension of liquid `5Nm^(-1)`)

A

`0.75`J

B

`1/5`J

C

`2.25`J

D

`3.0`J

Text Solution

Verified by Experts

The correct Answer is:
B
`dw = 2xx dA xx T `
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NIKITA PUBLICATION-SURFACE TENSION-Multiple Choice Questions (Surface energy and surface tension )
  1. The surface energy of a liquid drop is E. It is sprayed into 1000 equa...

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  2. 8000 identical water drops are combined to form a big drop then the ra...

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  3. The surface energy of liquid film on a ring of area 0.15 m^(2) is (sur...

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  4. The surface tension of soap solution is 2.1 xx 10^(-2) N/m . Then th...

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  5. A ring of radius 0.75 cm is floating on the surface of water . If surf...

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  6. A mercury drop of radius 1 cm is sprayed into 10^(6) drops of equal s...

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  7. If a drop of water of radius 0.1 cm is broken up into a million drople...

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  8. The work done in blowing a soap bubble of a radius 0.02 cm m to radius...

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  9. What will be the work done in blowing a soap bubble of radius 1 cm to ...

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  10. What will be the work done in blowing a soap bubble of radius 2 cm , t...

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  11. A big drop of radius R is formed by 1000 small droplets of water, then...

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  12. If work done in blowing a bubble of radius R is in a soap solution , t...

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  13. Eight droplets of water each of radius 0.5 mm when coalesce into singl...

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  14. The surface energy of a liquid drop is U . If it is sprayed into 125 ...

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  15. If 64 raindrops combine into a single drop . The ratio of total surfa...

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  16. The surface tension of a liquid is 0.5 N/m . If a liquid film is form...

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  17. A soap film in formed on a frame of area 4xx10^(-3)m^(2). If the area ...

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  18. The surface energy of a soap film formed on a frame of area 2 xx 10^(...

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  19. The surface energy of a liquid drop is E. It is sprayed into 1000 equa...

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  20. The surface tension of soap solution is 10 xx 10^(-2) n/m . The am...

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