Surface tension of a liquids 70 dynes/cm. In MKS system its value is

Question

$\begin{array}{1 1} (a) \;70\;N/m\\ (b) \;7 \times 10^{-2}\;N/m \\ (c) \;7 \times 10^{3}\;N/m \\ (d) \;7 \times 10^{2}\;N/m \end{array}$