In case of synthetic unit hydrograph, which of the following relation was suggested by Synder relating standard duration (D) with the basin lag in hours (tp) ?
1
\(\mathrm{D}=\frac{2}{11} t_{p}\)
2
\(\mathrm{D}=\frac{1}{11} t_{p}\)
3
\(\mathrm{D}=\frac{1}{12} \mathrm{t}_{\mathrm{p}}\)
4
\(\mathrm{D}=\frac{\mathrm{t}_{\mathrm{p}}}{5}\)