Consider the following statements with respect to capillarity in liquids and identify the correct statement.
1
Capillarity phenomenon can only lower the liquid surface level in a small tube relative to the adjacent general level of liquid when the tube is held vertically in the liquid.
2
Capillarity phenomenon can only raise the liquid surface level in a small tube relative to the adjacent general level of liquid when the tube is held vertically in the liquid.
3
Capillarity is expressed in terms of N/mm2.
4
Capillarity phenomenon can raise or lower the liquid surface level in a small tube relative to the adjacent general level of liquid when the tube is held vertically in the liquid.