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What would be the excess pressure in side a small air bubble of 0.2 mm diameter situated just below the surface of water ? (S.T of water = 0.072 N/m)

A

`1 . 44 xx 10^(2)` Pa

B

` 1..44 xx10^(3)`Pa

C

` 1.44 xx 10^(4)`Pa

D

`1.44 xx10^(5)`Pa

Text Solution

Verified by Experts

The correct Answer is:
B
` P = (2T)/r = (2 xx 72 xx 10^(-3))/(10^(-4))= 1440 = 1.44 xx 10^(3)` pa
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NIKITA PUBLICATION-SURFACE TENSION-Multiple Choice Questions (Excess pressure due to surface tension )
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  12. If a small air bubble of radius 0.1 mm is formed just below the surfac...

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  15. The excess pressure inside a soap bubble P and the radius R of the bub...

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  16. The excess pressure due to surface tension inside a spherical drop is...

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  17. The surface tension of soap water is 0.04 N/m. The excess pressure ins...

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  18. The excess pressure in dyne/ inside a liquid drop of radius 2 mm a...

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  19. A bubble of radius 10 cm is formed with a solution that has surface te...

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