\(=\frac{\Delta V}{\Delta I}=\frac{0.1}{10 \times 10^{-3}}=10 \Omega\)
Reverse bias resistance \(=\frac{10}{10^{-6}}=10^{7} \Omega\)
Ratio of resistances
\(=\,\frac {Forward \,\,bias\,\, resistance }{Reverse\,\, bias \,\,resistance}\)
\(=10^{-6}\)