In the bottom of a vessel with mercury of density ρ there is a round hole of radius r. At what maximum height of the mercury layer will the liquid still not flow out through this hole? (Surface tension = T)
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
Because mercury meniscus is convex. The pressure just inside the hole will be less than the
outside pressure by 
∴ h ρ g = 
or h = 
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