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The pressure of air in a soap bubble of ...

The pressure of air in a soap bubble of 0.7 cm diameter is 8 mm of water above the atmospheric pressure calculate the surface tension of soap solution. (take `g=980cm//sec^(2))`

A

100 dyne /cm

B

68.66 dyne /cm

C

137 dyne/cm

D

150 dyne /cm

Text Solution

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The correct Answer is:
B
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ERRORLESS -SURFACE TENSION-Exercise
  1. If the surface tension of a soap solution is 0.03 MKS units, then the ...

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  2. The excess pressure inside a soap bubble is

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  3. The pressure of air in a soap bubble of 0.7 cm diameter is 8 mm of wat...

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  4. Pressure inside two soap bubbles are 1.01 and 1.02 atmospheres. Ratio ...

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  5. A capillary tube of radius r is dipped in a liquid of density rho and...

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  6. Two spherical soap bubbles of radii r1 and r2 in vacuume coalesce unde...

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  7. The adjoining diagram shows three soap bubbles, A , B and C prepared b...

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  8. When a large bubble rises from the bottom of a lake to the surface its...

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  9. A soap bubble in vacuum has a radius of 3 cm ad another soap bubble in...

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  10. The volume of an air bubble becomes three times as it rises from the b...

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  11. Excess pressure inside one soap bubble is four times that of other. Th...

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  12. There are two liquid drops of different radii. The excess pressure ins...

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  13. If pressure at half the depth of a lake is equal to 2//3 pressure at t...

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  14. If the radius of a soap bubble is four times that of another, then the...

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  15. A spherical drop of water has 1mm radius. If the surface tension of wa...

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  16. The pressure at the bottom of a tank containing a liquid does not dep...

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  17. In capillary pressure below the curved surface of water will be

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  18. Two soap bubbles of radii r(1) and r(2) equal to 4 cm and 5 cm are to...

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  19. The pressure inside a small air bubble of radius 0.1mm situated just b...

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  20. Tow soap bubbles A and B are formed at the two open ends of a tube. Th...

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