Question

what is angle of contact ​

Answer 1

$\huge \bf \underline \red{Answer}$

The angle of contact remains the same whether the liquid is contained in a glass vessel or a glass plate is inserted in the liquid or a drop of given liquid rests on the glass

Answer 2

Answer:

The angle of contact is the angle made by the tangent to the liquid surface at the point of contact with the solid surface inside the liquid.