the lower end of a capillary tube is at a depth of 12 cm and water rises 3 cm in it. the mouth pressure required to blow and air bubble at the lower end will be X cm of water column where X is
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Answer:
P=P
1
−P
0
P=P
0
+ρgh−P
0
=ρgh
ρgx=(3+12)ρg
x=15cm
The correct option is D.
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