The property utilized in the manufacture of lead shots is

The surface tension of a liquid is $70 \, dyne/cm$. In $MKS$ system its value is

If the work done in increasing the size of a soap film from $10\, cm \times 6\, cm$ to $60\, cm \times 11\, cm$ is $2 \times 10^{-4}\, J$,what is the surface tension?

Two pieces of glass plates placed one upon the other with a little water in between them cannot be separated easily because of:

$A$ massless inextensible string in the form of a loop is placed on a horizontal film of soap solution of surface tension $T$. If the film is pierced inside the loop and it converts into a circular loop of diameter $d$,then the tension produced in the string is ..........

At which of the following temperatures,the value of surface tension of water is minimum in $^oC$?