A `U`-tube contains water and methylated spirit separated by mercury.The mercury columns in the two arms are in level with `10.0cm` of water in one arm and `12.5m` of spirit in other.

What is the specific gravity of spirit?

A child dipped two identical capillary tubes,one in a beaker containing mercury.He observed that water and mercury have risen through the tubes to a certain heights. What difference did he observe in the shape of the meniscus of the two liquids in the tube?

A child dipped two identical capillary tubes,one in a beaker containing mercury.He observed that water and mercury have risen through the tubes to a certain heights. If he plots a graph connecting the radius of the capillary tube and capillay height,what will be the shape of the graph?