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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

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The correct Answer is:
B
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ERRORLESS -SURFACE TENSION-Exercise
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  5. If work done in increasing the size of a soap film from 10 cm x 6 cm t...

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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. When two small bubbles join to form a bigger one, energy is

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  8. A film of water is formed between two straight parallel wires of lengt...

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  9. A drop of mercury of radius 2 mm is split into 8 identical droplets. F...

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  10. Two small drop of mercury, each of radius R coalesce in from a simple ...

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  11. Radius of a soap bubble is increased from R to 2 R work done in this p...

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  12. The work done in blowing a soap bubble of radius 0.2 m is (the surface...

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  13. A liquid film is formed in a loop of area 0.05 m 2. Increase in its p...

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  14. In order to float a ring of area 0.04 m in a liquid of surface tension...

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  15. If two soap bubbles of equal radii r coalesce then the radius of curva...

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  16. A liquid will not wet the surface of a solid if the angle of contact ...

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  17. The meniscus of mercury in the capillary tube is

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  18. When the temperature increased the angle of contact of a liquid

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  19. The angle of contanct between glass and mercury is

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  20. A mercury drop does not spread on a glass plate because the angle of c...

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