Hydraulics and Fluid Mechanics in ME
A glass tube of smaller diameter is used while performing an experiment for the capillary rise of water because

It is easier to see through the glass tube
It is not possible to conduct this experiment with any other tube
All of these
Glass tube is cheaper than a metallic tube

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Hydraulics and Fluid Mechanics in ME
When a body is placed over a liquid, it will float if

Gravitational force is equal to the up-thrust of the liquid
None of these
Gravitational force is less than the up-thrust of the liquid
Gravitational force is more than the up-thrust of the liquid

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