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The amount of work done in forming a soa...

The amount of work done in forming a soap film of size 10 cm x 10 cm is (Surface tension `T=3xx10^(-2) N//m`)

A

`6xx10^(-4) J`

B

`3xx10^(-4) J`

C

`6xx10^(-3) J`

D

`3xx10^(-4) J`

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The correct Answer is:
A
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ERRORLESS -SURFACE TENSION-Exercise
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  4. The work done in blowing a soap bubble of 10 cm radius is (Surface ten...

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  6. One thousand small water drops of equal radii combine to form a big dr...

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  7. The work done in increasing the size of a soap film from 10 cm × 6 cm ...

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  8. If sigma be the surface tension, the work done in breaking a big drop...

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

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  10. When 10^(6) small drops coalesce to make a larger drop them the drop

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  11. Which of the following statements are true in case when two water drop...

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  12. 8000 identical water drops combine together to form a big drop. Then t...

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

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  14. 8 mercury drops coalesce to form one mercury drop, the energy changes ...

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  15. If work done in increasing the size of a soap film from 10 cm x 6 cm t...

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

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

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

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

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

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