

Hydraulics - Engineering
Q1: If cohesion between the molecules of a fluid is more than adhesion between the fluid and glass, the free level of fluid in a dipped glass tube will beA
higher than the surface of liquid
B
same as the surface of liquid
C
lower than the surface of liquid
D
none of these.
ANS:C - lower than the surface of liquid When the cohesion between the molecules of a fluid is greater than the adhesion between the fluid and the glass, the liquid tends to be more attracted to itself than to the surface of the glass. This scenario creates a concave meniscus, where the edges of the liquid curve downwards. Here's how it works:
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