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Fluid Mechanics and Hydraulic Machinery
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Fluid Mechanics and Hydraulic Machinery Miscellaneous
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Fluid Mechanics and Hydraulic Machinery Miscellaneous
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Fluid Mechanics and Hydraulic Machinery
Fluid Mechanics and Hydraulic Machinery Miscellaneous
The difference in pressure (in N/m
2
) across an air bubble of diameter 0.001 m immersed in water (surface tension = 0.072 N/m) is_____.
88 N/m
2
288 N/m
2
28 N/m
2
None of these
Correct Option:
B
Surface tension in a bubble =
Δp.r
4
we know, P
i
– P
o
=
4T
r
Δp =
4 × 0.072
= 288 N/m
2
.
0.01
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