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The surface energy of a soap film formed...

The surface energy of a soap film formed on a frame of area ` 2 xx 10^(-3) m^(2) is (T= 40 xx 10^(-3)` N/m)

A

`16 xx 10^(-5)`J

B

`32 xx 10^(-5)`J

C

`16 xx 10^(-4)`J

D

`32 xx 10^(4)`J

Text Solution

Verified by Experts

The correct Answer is:
A
`E = T xx 2xxA`
` 40 xx 10^(-3) xx2 xx 10^(-3)`
` = 16xx10^(-5)` J
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NIKITA PUBLICATION-SURFACE TENSION-Multiple Choice Questions (Surface energy and surface tension )
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  2. A big drop of radius R is formed by 1000 small droplets of water, then...

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

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

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

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

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

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

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

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

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

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  12. A spherical drop of oil of radius 1 cm is broken into 1000 droplets of...

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  13. Work W is required to form a bubble of volume V from a given solution....

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  14. The amount of work performed to break a spherical drop of radius 1 ...

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  15. A film is held on a ring of area 0.05 m^(2) of liquid of surface ten...

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  16. The work done is breaking a water drop of radius 1 cm into 64 equal d...

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  17. The radius of a soap bubble is reduced rom 5 cm to 1 cm . Then the c...

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  18. A thin soap film is formed in a recangular frame of area 15 xx 10^(-4...

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  19. A capillary tube is radius 0.02 cm is dipped vertically in a beaker co...

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  20. A liquid film is formed over a ring of area 0.02 xx 10^(4) cm^(2) . ...

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